12 letters
- timelinesses17
- towardliness18
- trampoliners20
- trampolining23
- trampolinist20
- trifluralins19
- trilingually21
- unavailingly25
- unblinkingly29
- uncompelling28
- undercooling22
- underselling20
- ungainliness19
- unholinesses18
- unkennelling25
- unkindliness22
- unlikeliness21
- unloveliness21
- unmyelinated22
- unrulinesses17
- unscrambling27
- unseemliness19
- unsettlingly21
- untimeliness19
- waterfowling25
- weaklinesses21
- wifelinesses20
- wildfowlings27
- wobblinesses23
- woollinesses18