ONOMASTICS /ˌɒ.nəʊˈmæs.tɪks/ ► audio Scrabble 14 Words With Friends 17 Scrabble letter values: O1N1O1M3A1S1T1I1C3S1 = 14 Definition noun the branch of lexicology that studies the forms and origins of proper names. See all 389 words you can make from ONOMASTICS → 10-letter words Words starting with O Words ending with S ← Unscramble different letters