There are 17 6-letter words that start with 'mer'.
| mercer | merces | merdes | merely | merest | 
| merged | mergee | merger | merges | merino | 
| merits | merles | merlin | merlon | merlot | 
| merman | mermen | |||
Note: These 17 6-letter words that start with 'mer' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with merc, meri, merr, merg, mero, merl, mere, merm, merb, merd, merk.
4-letter words start with 'mer' (4)