30 words
18-letter words starting with U
30 words.
- ultramicroscopical28
- ultracentrifugally27
- uncompromisingness27
- ultraconservatives26
- ultrasophisticated26
- unchangeablenesses26
- unconvincingnesses26
- unenthusiastically26
- ultraconservatisms25
- uncharitablenesses25
- ungrammaticalities25
- uniformitarianisms25
- unpredictabilities25
- unprinciplednesses25
- unprofitablenesses25
- ultrarevolutionary24
- unaccountabilities24
- unconscionableness24
- unattractivenesses23
- unconstitutionally23
- unresponsivenesses23
- unsatisfactoriness23
- unscrupulousnesses22
- unintelligibleness21
- ultranationalistic20
- unassailablenesses20
- unreasonablenesses20
- unseasonablenesses20
- unsubstantialities20
- unrestrainednesses19
How this list is built
- Every word here comes from ENABLE, a lexicon released to the public domain — 172,823 words. It is the list this site can legally publish in full, and it is stated openly rather than implied.
- The tournament lists — TWL/OWL in North America, Collins/SOWPODS elsewhere — are copyrighted compilations. They are not used here and not merged in. A small number of words will therefore differ from what a given game accepts.
- Scores use the standard tile values (A=1 … Q=10, Z=10) and ignore board bonuses, which depend on where you place the word, not on the word itself.
- Lists are ordered by score, then alphabetically — the order that is useful when you are choosing a play, rather than alphabetical for its own sake.
SOURCE·ENABLE (Enhanced North American Benchmark Lexicon)·Public domain. 172,823 words. Tournament lists (TWL, Collins) are copyrighted and not used.·REVIEWED AUG 2026
SOURCE·ENABLE public-domain lexicon (172,823 words)·lists and scores computed from the lexicon, see method·REVIEWED AUG 2026