Daily word games to challenge your mind
Looking for 10-letter words starting with IS? You've found the right place. Popular examples include ISALLOBARS, ISCHAEMIAS, ISENTROPIC, plus ISOANTIGEN, ISOBUTANES, ISOCALORIC and many more. Each word links to its dictionary entry for deeper understanding.
| Word | Definition | Length | Syllables |
|---|---|---|---|
| isallobars | 10 | 4 | |
| ischaemias | 10 | 3 | |
| isentropic | 10 | 4 | |
| isoantigen | 10 | 4 | |
| isobutanes | 10 | 5 | |
| isocaloric | 10 | 5 | |
| isochronal | 10 | 4 | |
| isochrones | 10 | 4 | |
| isocracies | 10 | 4 | |
| isocyanate | 10 | 4 | |
| isoenzymes | 10 | 4 | |
| isoenzymic | 10 | 4 | |
| isogametes | 10 | 5 | |
| isogametic | 10 | 5 | |
| isoglossal | 10 | 4 | |
| isoglosses | 10 | 4 | |
| isoglossic | 10 | 4 | |
| isografted | 10 | 4 | |
| isolatable | 10 | 4 | |
| isolations | 10 | 4 | |
| isoleucine | 10 | 4 | |
| isomerases | 10 | 5 | |
| isomerisms | 10 | 4 | |
| isomerized | 10 | 5 | |
| isomerizes | 10 | 5 | |
| isometrics | 10 | 4 | |
| isometries | 10 | 4 | |
| isomorphic | 10 | 4 | |
| isoniazids | 10 | 4 | |
| isooctanes | 10 | 4 | |
| isopiestic | 10 | 4 | |
| isoplethic | 10 | 4 | |
| isoprenoid | 10 | 4 | |
| isopropyls | 10 | 4 | |
| isospories | 10 | 4 | |
| isostasies | 10 | 4 | |
| isothermal | 10 | 4 | |
| isotropies | 10 | 4 |
Are IS-starting words common?
IS is a frequent start; probing vowel swaps after IS quickly narrows options.
Is this list good for crosswords?
Yes—filter by length mentally and scan definitions when available.