English
idiotish
From idiot + -ish.
Formed from idiot + -ish
Proto-Indo-European *swé ‘self’
…
Ancient Greek ἰδιώτης ‘a private citizen’
Latin idiota ‘idiot’
Old French idiote
Middle English idiote
English idiot
Today it means
adj Like an idiot; idiotic; foolish.
Language periods are conventional ranges, not dates for this word.
Etymograph / idiotish