There are 18 5-letter words that start with 'bla'.
| blabs | black | blade | blaff | blahs | 
| blain | blame | blams | bland | blank | 
| blare | blase | blast | blate | blats | 
| blawn | blaws | blaze | ||
Note: These 18 5-letter words that start with 'bla' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with blac, blas, blan, blat, blam, blad, blaz, blab, blar, blaw, blae, blaf, blag, blah, blai, blau, blax.
4-letter words start with 'bla' (6)