12 letters
- trichlorphon24
- triplication20
- trephination19
- tripinnately20
- uncomplacent28
- uneconomical25
- unemployment27
- unimportance24
- unironically22
- tranquillity27
- transitorily16
- trichotomies20
- trichotomous21
- triumphalism25
- triumphalist22
- tyrothricins20
- ultraprecise20
- unhistorical20
- unhysterical22
- unmoralities18
- urethroscope21
- zootechnical31
h -
i -
n -
q -
s -
z -