diff --git a/src/click/core.py b/src/click/core.py
index bdb4b9618..a2d972786 100644
--- a/src/click/core.py
+++ b/src/click/core.py
@@ -2655,7 +2655,9 @@ def _parse_decls(
         if name is None:
             if not expose_value:
                 return None, opts, secondary_opts
-            raise TypeError("Could not determine name for option")
+            raise TypeError(
+                f"Could not determine name for option with declarations {decls!r}"
+            )
 
         if not opts and not secondary_opts:
             raise TypeError(
@@ -2995,7 +2997,7 @@ def _parse_decls(
         if not decls:
             if not expose_value:
                 return None, [], []
-            raise TypeError("Could not determine name for argument")
+            raise TypeError("Argument is marked as exposed, but does not have a name.")
         if len(decls) == 1:
             name = arg = decls[0]
             name = name.replace("-", "_").lower()