13 letters
- transfiguring23
- triggerfishes22
- typifications25
- uglifications24
- ultrafiltrate19
- ultrararefied19
- underfinanced25
- understaffing25
- unelectrified23
- unfalsifiable26
- unfulfillable29
- unjustifiable32
- unjustifiably34
- unqualifiedly33
- unselfishness22
- unspecifiable28
- verifiability26
- verifications24
- versification24
- vilifications25
- vinifications25
- vitrification24
- vivifications28
- waterproofing25
- wolfishnesses23
- zombification35