QUICKSILVER /ˈkwɪkˌsɪlvɚ/ Scrabble 29 Words With Friends 33 Definition adjective liable to sudden unpredictable change. — synonyms: erratic, fickle, mercurial, quicksilver(a) noun a heavy silvery toxic univalent and bivalent metallic element. — synonyms: mercury, hydrargyrum, Hg, atomic_number_80 See all 268 words you can make from QUICKSILVER → 11-letter words Words starting with Q Words ending with R ← Unscramble different letters