31 words
18-letter words starting with O
31 words.
- overcommercialized39
- overcommercializes38
- ophthalmologically34
- overcapitalization34
- overspecialization34
- overfertilizations33
- overcentralization32
- overindustrialized32
- orthogonalizations31
- orthopsychiatrists31
- oscillographically31
- overgeneralization31
- overindustrializes31
- overembellishments30
- overextrapolations30
- overoptimistically30
- oversimplification30
- organophosphoruses29
- overcommunications29
- overclassification28
- overprotectiveness28
- overidentification27
- ovolactovegetarian27
- otherworldlinesses25
- overconcentrations25
- overindebtednesses25
- opinionativenesses23
- overinterpretation23
- overrepresentation23
- obstreperousnesses22
- ostentatiousnesses18
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
