Coms is valid Scrabble Word

Is coms a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is coms valid Words with Friends?
Words with Friends NO

Definitions for COMS in dictionary:

Words that contain COMS

comsat10 comsats11 comsymp18 dotcoms12 nincoms11 noncoms11 romcoms13 satcoms11 sitcoms11 syncoms14 unicoms11 capcoms15 comsymps19 minicoms14 telecoms12 intercoms13 comstocker20 comstockers21 comstockery24 comstockism23 comstockisms24 comstockeries23
Find what other words can be done using letters: "coms"
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