How many words start with BIO?

This page lists 232 words starting with BIO, each shown with its Scrabble score.

Are these words valid in official Scrabble play?

Not necessarily. This site uses the open ENABLE word list; check the official dictionary used by your game or tournament.

Words Starting With BIO

All 232 words in our dictionary that begin with BIO, sorted by Scrabble score. Use them to open a word on the board or fill a crossword clue.

232 words · number = Scrabble score · sorted highest score first

biomechanically29 biogeochemistry28 biochemically27 biogeochemicals27 biographically27 biofeedbacks26 biogeochemical26 biogeographical26 biomathematical26 biorhythmic26 biostratigraphy26 bioavailability25 biofeedback25 biohazards25 biomathematics25 biophysicists25 biochemistry24 biogeographic24 biogeography24 biohazard24 biomechanical24 biophysicist24 biotechnology24 biochemicals23 biochemistries23 biocompatible23 bioelectricity23 biogeographers23 biogeographies23 bioluminescence23 biomechanics23 biophysical23 biorhythms23 biosystematics23 biotechnologies23 biotechnologist23 biochemical22 biogenetically22 biogeographer22 biographical22 biometeorology22 biophysics22 biorhythm22 bioscientific22 biosynthetic22 biosystematic22 biosystematists22 bioactivity21 bioconversions21 biodiversity21 biomorphic21 biosystematist21 biotechnical21 bioactivities20 biochemists20 bioconversion20 biodegradable20 biodegradations20 biodiversities20 biodynamic20 biographic20 biography20 biologically20 bioluminescent20 biopolymers20 biosyntheses20 biosynthesis20 bioavailable19 biochemist19 bioclimatic19 biodegradation19 bioelectrical19 bioengineerings19 bioethicists19 biographees19 biographers19 biographies19 biomedicines19 biometricians19 biopolymer19 biospheric19 biostatistician19 biotelemetric19 biotelemetry19 bioacoustics18 biocycles18 biodegrading18 bioenergetics18 bioengineering18 bioethicist18 biographee18 biographer18 biomedicine18 biometrician18 biomolecular18 biomolecules18 biosocially18 biostatistical18 biotelemetries18 biotoxins18 bioassaying17 biochips17 biocycle17 biodegraded17 bioelectric17 bioenergetic17 bioengineered17 bioethical17 biofoulings17 biomedical17 biometrical17 biomolecule17 biopsying17 biosafety17 biosciences17 bioscientists17 bioscopy17 biospheres17 biostatistics17 biotoxin17 biotypic17 bioactive16 bioassayed16 biochip16 biodegrades16 bioethics16 biofouling16 biologicals16 biologistic16 biomaterials16 biometrics16 biosafeties16 bioscience16 bioscientist16 bioscopies16 biosphere16 biocoenoses15 biocoenosis15 biocontrols15 biodegrade15 bioengineers15 bioethic15 biogenetic15 bioherms15 biological15 biologisms15 biolytic15 biomaterial15 biometric15 biometry15 bionomics15 bioplasms15 bioreactors15 bioscopes15 biotechs15 biotypes15 bioassays14 biocenoses14 biocenosis14 biocontrol14 bioengineer14 bioherm14 biologics14 biologism14 biometries14 bionomic14 bionomy14 bioplasm14 bioreactor14 bioscope14 biotech14 biotype14 bioassay13 biocidal13 biocides13 biogeneses13 biogenesis13 biogenic13 biogeny13 biologic13 biologists13 biology13 biolyses13 biolysis13 biomasses13 bionomies13 biopics13 biopsic13 biopsied13 biopsy13 bioptic13 biosocial13 biovular13 biocide12 bioclean12 biogasses12 biogenies12 biogenous12 biologies12 biologist12 biopic12 biopsies12 biosensors12 biotical12 biotitic12 biotopes12 biogases11 biomass11 bionics11 biontic11 biosensor11 biotics11 biotope11 biogens10 biomes10 bionic10 biotic10 biotites10 biotrons10 biogas9 biogen9 biome9 biotins9 biotite9 biotron9 bionts8 biotas8 biotin8 biont7 biota7 bios6 bio5

Playing words that start with BIO

Leading with BIO lets you hook onto open columns and reach premium squares. Scan the high-scoring entries above first — they offer the best return when you have the tiles.

A quick statistical tour

A few numbers before you scroll: the 232 words here run from 3 to 15 letters, with 10-letter words the largest group (32 entries). Wordle players have 3 five-letter options, and there are 20 seven-letter candidates for a Scrabble bingo. The single best scorer is BIOMECHANICALLY at 29 points before multipliers.

The five biggest scorers on the page: BIOMECHANICALLY (29), BIOGEOCHEMISTRY (28), BIOCHEMICALLY (27), BIOGEOCHEMICALS (27), BIOGRAPHICALLY (27). The longest entry is BIOAVAILABILITY at 15 letters, and the average word here is worth about 17 points. Letter-wise, I is the workhorse — it appears in 232 of these words, ahead of B (232) and O (232).

Start with these three

When the rack looks hopeless, BIONTS (6 letters, 8 points) is the kind of quiet play that keeps a game moving.
Playing BIOTAS across a double-word square turns its base 8 points into 16 — solid value for 6 tiles.
BIOTIN — a 6-letter, 8-point play that slots into tight board lanes where longer words won't fit.

Round out your set with BIONT (7), BIOTA (7), BIOS (6), BIOGAS (9), BIOGEN (9) — all built from common tiles.

One chunk, many words: BIO

Letter chunks like BIO are how vocabulary compounds: learn the pattern once and every word built on it gets easier to recall and to spell. Read down this list and you will see the same rhythm repeat across lengths — that repetition is exactly what makes these words stick for spelling bees, ESL study and crossword pattern-matching alike.

More starting letters

Narrow it down

Combine a starting letter with a length or pattern in the Word Finder for exact matches.