4-Letter Words That Start With: OS There are 3 4-letter words, 0 4-letter phrases and 2 4-letter abbr's that start with OS. Did you mean?All 4 letter wordsAll words starting with OSEnding with OSContaining OSBest ScoringTop 10Top 10 (Default)Top 20Top 50Top 100 Scr US AllScrabble US (Default)Scrabble EUWW FriendsWordFeud All All (Default)VerbNounAdjectiveAdverbExpand?WordSave?LengthUsagePointsTypeossa44 nounnnoun • Bone.oses44 nounn Valid word for Scrabble US osar44 verb, adverbv, adv Valid word for Scrabble US Tip: Scrabble EU allows far more words than US! Also change the max length to see more words. All 4 Letter Words Most Common ASC Word A-ZWord Z-AMost Common ASC (Default)Most Common DESCScrabble Points Hi-LoScrabble Points Lo-HiWWF Points Hi-LoWWF Points Lo-HiWordFeud Points Hi-LoWordFeud Lo-HiWords (3)ossa4oses4osar4Abbreviations (2)osloosha