uninformed (adj.)
- awkward
- callow
- dumb
- empty
- empty-headed
- gauche
- green
- groping
- ignorant
- inane
- incognizant
- inexperienced
- innocent
- naive
- nescient
- oblivious
- raw
- simple
- tentative
- unacquainted
- unadvised
- unaware
- uncomprehending
- unenlightened
- unfamiliar
- unilluminated
- uninitiated
- uninstructed
- unintelligent
- unknowing
- unprepared
- unready
- unripe
- unsure
- unsuspecting
- unversed
- unwitting
- vacuous