10 letters
- nucleating19
- nucleation17
- oceanfront18
- oceangoing19
- octonaries14
- olecranons16
- operagoing18
- oratorical14
- ornamental16
- orogenetic16
- outearning15
- outglaring17
- outranging17
- overacting20
- overaction18
- pancreatin18
- paragoning19
- pentagonal18
- petrologic19
- platooning18
- pratincole18
- precooling20
- prolonging20
- rationales12
- rattooning14
- realigning17
- rechanging21
- recleaning18
- reclothing19
- recoloring17
- recounting18
- reenacting17
- refloating17
- regelating16
- regranting16
- regulating17
- regulation15
- relational13
- relaxation19
- relegating16
- relegation14
- relocating17
- relocation15
- renovating18
- renovation16
- replanting18
- resonating14
- retackling21
- retinacula16
- revocation18
- rotational12
- senatorial12
- senatorian12
- strangling17
- tangential15
- tetragonal14
- theologian16
- tobogganer18
- toenailing15
- tolerating14
- toleration12
- tractional15
- transgenic17
- tyrannical18
- ulcerating18
- ulceration16
- uncreating18
- urogenital15
- vacationer18
- vocational19