| Word | Definitions | Synonyms |
|---|---|---|
| sesquicentennial | (noun) the 150th anniversary (or the celebration of it) | - |
| sesquipedalia | (noun) a very long word (a foot and a half long) | Synonyms: sesquipedalian |
| sesquipedalian | (noun) a very long word (a foot and a half long) | Synonyms: sesquipedalia |
| sesquipedality | (noun) using long words | - |