'Unprepared' definitions:

Definition of 'unprepared'

From: WordNet
adjective
Without preparation; not prepared for; "unprepared remarks"; "the shock was unprepared"; "our treaty makers approached their immensely difficult problems unprepared"- R.E.Danielson [ant: prepared]

Definition of 'Unprepared'

From: GCIDE

Synonyms of 'unprepared'

From: Moby Thesaurus