10 letters
- mordanting18
- morganatic19
- navigation18
- nicotianas15
- nitrations12
- nominating18
- noncardiac19
- noncontact19
- noninitial14
- nonmigrant18
- nonorganic18
- nonreading16
- nonrioting15
- notarizing23
- ordination13
- organicist16
- organicity18
- originated14
- outdancing19
- outtrading15
- pagination17
- patinating17
- patination15
- poniarding18
- practicing22
- radiations12
- radicating17
- radiogenic17
- rattooning14
- recitation14
- reignition14
- reinciting17
- sanitating14
- sanitation12
- sonicating17
- stagnation14
- stationing14
- tacticians17
- tarnations12
- tictacking23
- tictocking23
- timocratic19
- tinctorial15
- tincturing18
- tractional15
- traditions12
- tragicomic21
- transiting14
- transition12
- trapanning18
- truncating18
- truncation16
- urticating17
- urtication15
- vaccinator21
- vindicator19