Added 10 October 2026 addle-brained adjective Categories: Obscure Words adjective ! Definition from Wiktionary (CC BY-SA). More about addle-brained at Wordnik → Where our words come from → Muddled in thought or mind; foolish; stupid. Related Words: addlebrainedfuddlebrainedcockbrainedpin-brainedbubble-brainedmuddle-headedmadbrainedbirdbrainedscramblebrainedlamebrainedmuddleheadedfeather-brained Back to today's word