IPA: /ˈɪm.bɪ.sɪl/
KK: /ˈɪm.bɪ.sɪl/
Not intelligent; lacking good judgment or sense.
His imbecile comments made everyone question his understanding of the topic.
A person who is considered to be very foolish or lacking in intelligence.
He acted like an imbecile when he forgot his own birthday.
Imbecile comes from the Latin 'imbecillus' (meaning weak or weak-minded), which is a combination of 'in-' (meaning not) and 'baculum' (meaning staff or support). The term originally referred to someone who was not strong or supported, eventually evolving to describe a person of low intelligence.
Think of someone who is 'not strong' ('in-' means not and 'baculum' means staff or support) — this helps you remember that an imbecile is someone considered weak-minded.
No commonly confused words.