diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index 06ee868ff7..7f83808caf 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -18,7 +18,6 @@ jobs:
           - "1.16"
           - "1.17"
           - "1.18"
-          - "1.19"
         otp:
           - "25"
           - "26"
@@ -26,8 +25,6 @@ jobs:
           - "28"
         # see https://hexdocs.pm/elixir/compatibility-and-deprecations.html#between-elixir-and-erlang-otp
         exclude:
-          - elixir: 1.19
-            otp: 25
           - elixir: 1.17
             otp: 28
           - elixir: 1.16
diff --git a/.gitignore b/.gitignore
index 814da1a8fb..80560a3d47 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+.claude
+.vscode
 /bench
 /_build
 /cover
@@ -7,7 +9,6 @@
 erl_crash.dump
 *.ez
 src/*.erl
-.tool-versions*
 missing_rules.rb
 .DS_Store
 /priv/plts/*.plt
diff --git a/lib/absinthe/phase/debug.ex b/lib/absinthe/phase/debug.ex
index 59bb374b7f..296fd9ef7c 100644
--- a/lib/absinthe/phase/debug.ex
+++ b/lib/absinthe/phase/debug.ex
@@ -8,7 +8,7 @@ defmodule Absinthe.Phase.Debug do
   @spec run(any, Keyword.t()) :: {:ok, Blueprint.t()}
   def run(input, _options \\ []) do
     if System.get_env("DEBUG") do
-      IO.inspect(input, label: :debug_blueprint_output)
+      IO.inspect(input, label: "debug_blueprint_output")
     end
 
     {:ok, input}
diff --git a/lib/absinthe/schema/notation/sdl_render.ex b/lib/absinthe/schema/notation/sdl_render.ex
index 29770ccf31..03175971ae 100644
--- a/lib/absinthe/schema/notation/sdl_render.ex
+++ b/lib/absinthe/schema/notation/sdl_render.ex
@@ -7,9 +7,11 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
 
   @line_width 120
 
-  def inspect(term, %{pretty: true}) do
+  def inspect(term, %{pretty: true} = options) do
+    adapter = Map.get(options, :adapter, Absinthe.Adapter.LanguageConventions)
+
     term
-    |> render()
+    |> render([], adapter)
     |> concat(line())
     |> format(@line_width)
     |> to_string
@@ -25,9 +27,9 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
     Absinthe.Type.BuiltIns.Scalars,
     Absinthe.Type.BuiltIns.Introspection
   ]
-  defp render(bp, type_definitions \\ [])
 
-  defp render(%Blueprint{} = bp, _) do
+  # 3-arity render functions (with adapter)
+  defp render(%Blueprint{} = bp, _, adapter) do
     %{
       schema_definitions: [
         %Blueprint.Schema.SchemaDefinition{
@@ -48,11 +50,32 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
       |> Enum.filter(& &1.__private__[:__absinthe_referenced__])
 
     ([schema_declaration] ++ directive_definitions ++ types_to_render)
-    |> Enum.map(&render(&1, type_definitions))
+    |> Enum.map(&render(&1, type_definitions, adapter))
     |> Enum.reject(&(&1 == empty()))
     |> join([line(), line()])
   end
 
+  defp render(%Blueprint.Schema.DirectiveDefinition{} = directive, type_definitions, adapter) do
+    locations = directive.locations |> Enum.map(&String.upcase(to_string(&1)))
+
+    concat([
+      "directive ",
+      "@",
+      string(adapter.to_external_name(directive.name, :directive)),
+      arguments(directive.arguments, type_definitions),
+      repeatable(directive.repeatable),
+      " on ",
+      join(locations, " | ")
+    ])
+    |> description(directive.description)
+  end
+
+  # Catch-all 3-arity render - just ignores adapter and delegates to 2-arity
+  defp render(term, type_definitions, _adapter) do
+    render(term, type_definitions)
+  end
+
+  # 2-arity render functions for all types
   defp render(%Blueprint.Schema.SchemaDeclaration{} = schema, type_definitions) do
     block(
       concat([
@@ -185,21 +208,7 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
     |> description(scalar_type.description)
   end
 
-  defp render(%Blueprint.Schema.DirectiveDefinition{} = directive, type_definitions) do
-    locations = directive.locations |> Enum.map(&String.upcase(to_string(&1)))
-
-    concat([
-      "directive ",
-      "@",
-      string(directive.name),
-      arguments(directive.arguments, type_definitions),
-      repeatable(directive.repeatable),
-      " on ",
-      join(locations, " | ")
-    ])
-    |> description(directive.description)
-  end
-
+  # 2-arity render functions
   defp render(%Blueprint.Directive{} = directive, type_definitions) do
     concat([
       " @",
@@ -250,21 +259,36 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
     render(%Blueprint.TypeReference.Identifier{id: identifier}, type_definitions)
   end
 
+  # General catch-all for 2-arity render - delegates to 3-arity with default adapter
+  defp render(term, type_definitions) do
+    render(term, type_definitions, Absinthe.Adapter.LanguageConventions)
+  end
+
   # SDL Syntax Helpers
 
-  defp directives([], _) do
+  # 3-arity directives functions
+  defp directives([], _, _) do
     empty()
   end
 
-  defp directives(directives, type_definitions) do
+  defp directives(directives, type_definitions, adapter) do
     directives =
       Enum.map(directives, fn directive ->
-        %{directive | name: Absinthe.Utils.camelize(directive.name, lower: true)}
+        %{directive | name: adapter.to_external_name(directive.name, :directive)}
       end)
 
     concat(Enum.map(directives, &render(&1, type_definitions)))
   end
 
+  # 2-arity directives functions
+  defp directives([], _) do
+    empty()
+  end
+
+  defp directives(directives, type_definitions) do
+    directives(directives, type_definitions, Absinthe.Adapter.LanguageConventions)
+  end
+
   defp directive_arguments([], _) do
     empty()
   end
diff --git a/lib/absinthe/type/field.ex b/lib/absinthe/type/field.ex
index aac93cc6ef..fdce088b9e 100644
--- a/lib/absinthe/type/field.ex
+++ b/lib/absinthe/type/field.ex
@@ -75,7 +75,9 @@ defmodule Absinthe.Type.Field do
 
   * `:name` - The name of the field, usually assigned automatically by
      the `Absinthe.Schema.Notation.field/4`. Including this option will bypass the snake_case to camelCase conversion.
-  * `:description` - Description of a field, useful for introspection.
+  * `:description` - Description of a field, useful for introspection. If no description
+     is provided, the field will inherit the description of its referenced type during
+     introspection (e.g., a field of type `:user` will inherit the User type's description).
   * `:deprecation` - Deprecation information for a field, usually
      set-up using `Absinthe.Schema.Notation.deprecate/1`.
   * `:type` - The type the value of the field should resolve to
diff --git a/lib/mix/tasks/absinthe.schema.json.ex b/lib/mix/tasks/absinthe.schema.json.ex
index 450e247cfe..285887e06e 100644
--- a/lib/mix/tasks/absinthe.schema.json.ex
+++ b/lib/mix/tasks/absinthe.schema.json.ex
@@ -98,7 +98,14 @@ defmodule Mix.Tasks.Absinthe.Schema.Json do
         schema: schema,
         json_codec: json_codec
       }) do
-    with {:ok, result} <- Absinthe.Schema.introspect(schema) do
+    adapter =
+      if function_exported?(schema, :__absinthe_adapter__, 0) do
+        schema.__absinthe_adapter__()
+      else
+        Absinthe.Adapter.LanguageConventions
+      end
+
+    with {:ok, result} <- Absinthe.Schema.introspect(schema, adapter: adapter) do
       content = json_codec.encode!(result, pretty: pretty)
       {:ok, content}
     end
diff --git a/lib/mix/tasks/absinthe.schema.sdl.ex b/lib/mix/tasks/absinthe.schema.sdl.ex
index bb15b594a4..683b0ba572 100644
--- a/lib/mix/tasks/absinthe.schema.sdl.ex
+++ b/lib/mix/tasks/absinthe.schema.sdl.ex
@@ -67,12 +67,19 @@ defmodule Mix.Tasks.Absinthe.Schema.Sdl do
       |> Absinthe.Pipeline.upto({Absinthe.Phase.Schema.Validation.Result, pass: :final})
       |> Absinthe.Schema.apply_modifiers(schema)
 
+    adapter =
+      if function_exported?(schema, :__absinthe_adapter__, 0) do
+        schema.__absinthe_adapter__()
+      else
+        Absinthe.Adapter.LanguageConventions
+      end
+
     with {:ok, blueprint, _phases} <-
            Absinthe.Pipeline.run(
              schema.__absinthe_blueprint__(),
              pipeline
            ) do
-      {:ok, inspect(blueprint, pretty: true)}
+      {:ok, inspect(blueprint, pretty: true, adapter: adapter)}
     else
       _ -> {:error, "Failed to render schema"}
     end
diff --git a/mix.exs b/mix.exs
index 352cc18a08..9a9b1aaaef 100644
--- a/mix.exs
+++ b/mix.exs
@@ -77,6 +77,7 @@ defmodule Absinthe.Mixfile do
     [
       {:nimble_parsec, "~> 1.2.2 or ~> 1.3"},
       {:telemetry, "~> 1.0 or ~> 0.4"},
+      {:credo, "~> 1.1", only: [:dev, :test], runtime: false, override: true},
       {:dataloader, "~> 1.0.0 or ~> 2.0", optional: true},
       {:decimal, "~> 2.0", optional: true},
       {:opentelemetry_process_propagator, "~> 0.3 or ~> 0.2.1", optional: true},
diff --git a/mix.lock b/mix.lock
index ee5f2a1e62..0f7d6bbd22 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,5 +1,7 @@
 %{
   "benchee": {:hex, :benchee, "1.3.1", "c786e6a76321121a44229dde3988fc772bca73ea75170a73fd5f4ddf1af95ccf", [:mix], [{:deep_merge, "~> 1.0", [hex: :deep_merge, repo: "hexpm", optional: false]}, {:statistex, "~> 1.0", [hex: :statistex, repo: "hexpm", optional: false]}, {:table, "~> 0.1.0", [hex: :table, repo: "hexpm", optional: true]}], "hexpm", "76224c58ea1d0391c8309a8ecbfe27d71062878f59bd41a390266bf4ac1cc56d"},
+  "bunt": {:hex, :bunt, "1.0.0", "081c2c665f086849e6d57900292b3a161727ab40431219529f13c4ddcf3e7a44", [:mix], [], "hexpm", "dc5f86aa08a5f6fa6b8096f0735c4e76d54ae5c9fa2c143e5a1fc7c1cd9bb6b5"},
+  "credo": {:hex, :credo, "1.7.12", "9e3c20463de4b5f3f23721527fcaf16722ec815e70ff6c60b86412c695d426c1", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "8493d45c656c5427d9c729235b99d498bd133421f3e0a683e5c1b561471291e5"},
   "dataloader": {:hex, :dataloader, "2.0.1", "fa06b057b432b993203003fbff5ff040b7f6483a77e732b7dfc18f34ded2634f", [:mix], [{:ecto, ">= 3.4.3 and < 4.0.0", [hex: :ecto, repo: "hexpm", optional: true]}, {:opentelemetry_process_propagator, "~> 0.2.1 or ~> 0.3", [hex: :opentelemetry_process_propagator, repo: "hexpm", optional: true]}, {:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "da7ff00890e1b14f7457419b9508605a8e66ae2cc2d08c5db6a9f344550efa11"},
   "decimal": {:hex, :decimal, "2.3.0", "3ad6255aa77b4a3c4f818171b12d237500e63525c2fd056699967a3e7ea20f62", [:mix], [], "hexpm", "a4d66355cb29cb47c3cf30e71329e58361cfcb37c34235ef3bf1d7bf3773aeac"},
   "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm", "ce708e5f094b9cd4e8f2be4f00d2f4250c4095be93f8cd6d018c753894885430"},
@@ -8,6 +10,7 @@
   "erlex": {:hex, :erlex, "0.2.7", "810e8725f96ab74d17aac676e748627a07bc87eb950d2b83acd29dc047a30595", [:mix], [], "hexpm", "3ed95f79d1a844c3f6bf0cea61e0d5612a42ce56da9c03f01df538685365efb0"},
   "ex_doc": {:hex, :ex_doc, "0.35.1", "de804c590d3df2d9d5b8aec77d758b00c814b356119b3d4455e4b8a8687aecaf", [:mix], [{:earmark_parser, "~> 1.4.39", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "2121c6402c8d44b05622677b761371a759143b958c6c19f6558ff64d0aed40df"},
   "file_system": {:hex, :file_system, "1.0.1", "79e8ceaddb0416f8b8cd02a0127bdbababe7bf4a23d2a395b983c1f8b3f73edd", [:mix], [], "hexpm", "4414d1f38863ddf9120720cd976fce5bdde8e91d8283353f0e31850fa89feb9e"},
+  "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"},
   "makeup": {:hex, :makeup, "1.2.1", "e90ac1c65589ef354378def3ba19d401e739ee7ee06fb47f94c687016e3713d1", [:mix], [{:nimble_parsec, "~> 1.4", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "d36484867b0bae0fea568d10131197a4c2e47056a6fbe84922bf6ba71c8d17ce"},
   "makeup_elixir": {:hex, :makeup_elixir, "1.0.1", "e928a4f984e795e41e3abd27bfc09f51db16ab8ba1aebdba2b3a575437efafc2", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "7284900d412a3e5cfd97fdaed4f5ed389b8f2b4cb49efc0eb3bd10e2febf9507"},
   "makeup_erlang": {:hex, :makeup_erlang, "1.0.1", "c7f58c120b2b5aa5fd80d540a89fdf866ed42f1f3994e4fe189abebeab610839", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "8a89a1eeccc2d798d6ea15496a6e4870b75e014d1af514b1b71fa33134f57814"},