10 letters
- octahedron17
- octonaries14
- olecranons16
- orientated12
- orientates11
- orogenetic16
- orthoclase16
- overaction18
- pentathlon18
- pentatonic18
- peritoneal15
- phenacetin20
- planchette20
- pratincole18
- preethical19
- prelection18
- protection17
- ratcheting18
- rattooning14
- reanointed13
- rechannels18
- recitation14
- recleaning18
- reclothing19
- recolonize24
- recreation14
- reelection15
- reenacting17
- reflection18
- relegation14
- relocating17
- relocation15
- remittance17
- renominate15
- renovation16
- renunciate16
- reteaching18
- retentions12
- reticently17
- reticulate15
- retractile14
- retraction14
- revelation16
- revocation18
- rheostatic15
- rhetorical16
- rhinestone14
- rotational12
- sentential13
- stealthier13
- stentorian12
- tachometer18
- technocrat19
- teleonomic18
- telepathic19
- telephonic20
- tenantries12
- tenderloin14
- tenterhook17
- tetracaine14
- theatrical16
- theocratic18
- theodolite14
- theologian16
- thiopental17
- thorianite13
- threonines14
- tinctorial15
- tolerances15
- tolerating14
- toleration12
- tolerative15
- topnotcher19
- torrential12
- tracheoles16
- tractional15
- trajection23
- trancelike19
- transience15
- triathlete13
- triathlons14
- tricolette14
- trochanter16
- trochoidal17
- truncation16
- ulceration16
- unathletic18
- veneration16
- ventilator16