11 letters
- subregional19
- subreptions19
- subterminal20
- subtraction19
- subtropical22
- superficial22
- supernation17
- superpolite19
- supertonics19
- supplanters20
- suppletions20
- suppliances23
- supplicants23
- supplicated23
- supplicates22
- supportable22
- suppuration20
- suspiration16
- sustainable17
- tabernacles19
- tabulations17
- tambourines19
- tarnishable18
- tenaciously19
- theatricals17
- thermionics20
- thiopentals18
- thiouracils18
- thorianites14
- thrasonical18
- thunderclap23
- tourmalines17
- trabeations15
- traineeship17
- trampolines19
- transalpine17
- transhipped21
- translocate16
- treasonable16
- treasonably18
- tribulation17
- tribuneship21
- trichinizes26
- trichinoses17
- trichinosis17
- triplicates18
- triploidies16
- tropicalize27
- tuberculins21
- ulcerations17
- ultrabasics19
- ultrafiches21
- ultrasonics17
- unadaptable21
- unadoptable21
- unaspirated17
- uncatchable25
- unchristian19
- unclarities17
- uncrossable20
- uncrushable23
- unelaborate17
- unempirical23
- unescapable23
- ungraspable22
- uniparental18
- unmatchable25
- unpalatable21
- unpatriotic19
- unpolitical21
- unpractical23
- unprintable21
- unreachable22
- unrealistic17
- unrealities14
- unshockable26
- unsightlier18
- unsolicited18
- unspiritual18
- unstoppable23
- unstoppably25
- unteachable22
- untouchable23
- untraceable20
- unwatchable25
- uppercasing24
- uricotelism19
- urtications16
- usabilities16
- utilitarian14
- vacationers19
- variational17
- verbalistic22
- vibraphones24
- vibrational20
- voiceprints22
- voluntaries18
- vulcanisate21
- xiphisterna24