mentally confused or vague
WordReference Random House Learner's Dictionary of American English © 2025
mud•dle•head•ed /ˈmʌdəlˌhɛdɪd/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2025- confused in one's thinking;
blundering.
mud•dle•head•ed
(mud′l hed′id),USA pronunciation adj.
- confused in one's thinking;
blundering:a muddleheaded assertion.
- muddle + headed 1750–60
Collins Concise English Dictionary © HarperCollins Publishers::
'muddleheaded' also found in these entries (note: many are not synonyms or translations):