Not prepared, as for action or use
(Nautical) Said of a ship, when the wind, suddenly changing, forces the sails aft against the mast.
Thoughtlessly hasty; indiscreet; rash
Not noticing; paying no heed; thoughtless; inattentive.
Not suspicious; trusting.
The definition of impromptu is something done without advance thought or without a plan.
Having subcutaneous tissue exposed:
Having no apparent external cause or influence; occurring or produced by its own energy, force, etc. or through internal causes; self-acting
Displaying, having, or feeling no wariness; incautious:
(Music) Altered for a performance in some way, as with an object placed on one of the strings, in order to modify the timbre
Find another word for unprepared. In this page you can discover 27 synonyms, antonyms, idiomatic expressions, and related words for unprepared, like: surprised, taken off guard, unready, unwarned, unwary, taken-aback, unnotified, unadvised, unaware, unsuspecting and napping.