| word | symposium | ugly | hideous, frightful, frightening |
|---|---|
unassailable | impregnable |
unclear | opaque |
uncommon | unusual |
unconscious | oblivious |
unconventional | maverick |
uncooked | raw |
under | below |
understand | comprehend |
unfortunate | unlucky |
unfriendliness | misanthropy |
unhappy | miserable, depressed |
unlettered | uneducated |
unpronounceable | untouchable |
unsafe | dangerous |
unthinkable | taboo |
untoward | untoward |
unyielding | adamant |
urgent | crucial, important |
use | exercise, utilize, spend |
useful | handy |
usual | normal |
usually | generally |