un ‧ pre ‧ pared /ˌʌnprɪˈpeəd◂ $ -ˈperd◂/ BrE AmE adjective
[ Word Family: noun : ↑ preparation , preparations, ↑ preparedness ; adjective : ↑ prepared ≠ ↑ unprepared , ↑ preparatory ; verb : ↑ prepare ]
1 . not ready to deal with something
unprepared for
I was totally unprepared for the challenge which faced me.
2 . unprepared to do something formal not willing to do something:
They were unprepared to accept the conditions of the contract.