Daily word games to challenge your mind
Need 7-letter words beginning with OS? This comprehensive list has you covered. Popular examples include OSCINES, OSCULAR, OSCULES, plus OSCULUM, OSMATIC, OSMIOUS and many more. Click any word for its full definition and usage.
| Word | Definition | Length | Syllables |
|---|---|---|---|
| oscines | 7 | 3 | |
| oscular | 7 | 3 | |
| oscules | 7 | 3 | |
| osculum | 7 | 3 | |
| osmatic | 7 | 3 | |
| osmious | 7 | 2 | |
| osmiums | 7 | 2 | |
| osmolal | 7 | 3 | |
| osmolar | 7 | 3 | |
| osmoles | 7 | 3 | |
| osmosed | 7 | 3 | |
| osmoses | 7 | 3 | |
| osmosis | 7 | 3 | |
| osmotic | 7 | 3 | |
| osmunda | 7 | 3 | |
| osmunds | 7 | 2 | |
| ospreys | 7 | 2 | |
| osseins | 7 | 2 | |
| osseous | 7 | 2 | |
| ossicle | 7 | 2 | |
| ossific | 7 | 3 | |
| ossuary | 7 | 3 | |
| osteoid | 7 | 2 | |
| osteoma | 7 | 3 | |
| ostiary | 7 | 3 | |
| ostiole | 7 | 2 | |
| ostlers | 7 | 2 | |
| ostmark | 7 | 2 | |
| ostoses | 7 | 3 | |
| ostosis | 7 | 3 | |
| ostraca | 7 | 3 | |
| ostrich | 7 | 2 |
Are OS-starting words common?
OS is a frequent start; probing vowel swaps after OS quickly narrows options.
Is this list good for crosswords?
Yes—filter by length mentally and scan definitions when available.