Daily word games to challenge your mind
For puzzles requiring BIO prefixes, here are all 9-letter word options. Popular examples include BIOACTIVE, BIOASSAYS, BIOCYCLES, plus BIOETHICS, BIOGASSES, BIOGENIES and many more. Explore different vowel patterns after BIO to find your word quickly.
| Word | Definition | Length | Syllables |
|---|---|---|---|
| bioactive | 9 | 2 | |
| bioassays | 9 | 2 | |
| biocycles | 9 | 3 | |
| bioethics | 9 | 2 | |
| biogasses | 9 | 3 | |
| biogenies | 9 | 3 | |
| biogenous | 9 | 3 | |
| biography | 9 | 3 | |
| biohazard | 9 | 3 | |
| biologics | 9 | 3 | |
| biologies | 9 | 3 | |
| biologism | 9 | 3 | |
| biologist | 9 | 3 | |
| biomasses | 9 | 3 | |
| biometric | 9 | 3 | |
| bionomics | 9 | 3 | |
| bionomies | 9 | 3 | |
| bioplasms | 9 | 2 | |
| biopsying | 9 | 2 | |
| biorhythm | 9 | 2 | |
| biosafety | 9 | 4 | |
| bioscopes | 9 | 3 | |
| biosensor | 9 | 3 | |
| biosocial | 9 | 3 | |
| biosphere | 9 | 2 | |
| biotoxins | 9 | 3 |
Are BIO-starting words common?
BIO is a frequent start; probing vowel swaps after BIO quickly narrows options.
Is this list good for crosswords?
Yes—filter by length mentally and scan definitions when available.