Meaning ‘not’, ‘opposite’ or ‘reverse’

unable

unaided

unarmed

unaware

unbend

unblock

unborn

unbound

unbowed

uncanny

uncap

unchain

uncivil

unclamp

unclasp

unclean

unclear

uncoordinated

uncouth

undo

undone

undress

undue

unduly

unearth

unease

unequal

uneven

unfair

unfit

unfold

unfriendly

unfunny

unfurl

unglue

unhand

unhappy

unheard

unhelpful

unhinged

unhook

unhurt

unjam

unjust

unkind

unknown

unlaced

unleash

unlike

unlit

unload

unlock

unloved

unlucky

unmade

unmask

unmet

unmoved

unnamed

unnerve

unopened

unpack

unpaved

unpick

unpin

unplug

unravel

unread

unreal

unrest

unripe

unruly

unsafe

unscrew

unseat

unseen

unsound

unspent

unstuck

untamed

untruth

untie

untrue

untwist

unusual

unwashed

unwell

unwind

unwise

unwrap

unzip