14 letters
- treatabilities18
- trisoctahedron21
- trustabilities19
- ultradistances21
- ultramontanism24
- unattributable24
- uncontaminated25
- uncrystallized33
- undersecretary22
- understaffings26
- understandable23
- understandably25
- understandings22
- understatement21
- unhesitatingly24
- uniformitarian23
- unostentatious18
- unpalatability26
- unpredictables27
- unpremeditated24
- unstablenesses21
- unstandardized29
- untranslatable22
- upstandingness24
- utilitarianism20
- vasodilatation21
- vegetarianisms24
- vegetativeness25
- weltanschauung29