| unfeigned(adjective, open, smooth, simple, easy) |
| unforced(adjective, open, simple, easy, natural) |
| unforeseen(adjective, chance, quick, shocking, astonishing) |
| unprepared |
| unrestrained(intense, violent, hot, fierce, spirited) |
| unruly(adjective, mean, violent, wild, determined) |
| unstudied(adjective, open, simple, easy, natural) |
| unwary(adjective, careless, foolish, thoughtless, rash) |
| unwise(adjective, weak, careless, foolish, thoughtless) |
| venturesome(adjective, smart, careless, bold, thoughtless) |
| violent(adjective, strong, difficult, intense, wild) |
| visceral(adjective, natural, instinctive, automatic, involuntary) |
| volcanic(adjective, nervous, emotional, restless, volatile) |
| wandering(adjective, motiveless) |
| wanton(adjective, violent, ardent, fervent, zealous) |
| whirlwind(adjective, fast, rapid, tumultuous) |
| wistful(adjective, ardent, fervent, zealous, avid) |
| accelerated(adjective, sudden) |
| acute(adjective, sudden) |
| ad lib(expression, adjective, idiom, adverb, simple) |