1. erratic Odd is unmated, as an odd shoe, and so uneven, as an odd number. Singular is alone of its kind; as, the singular number. What is singular is odd, but what is odd may not be singular Synonyms: queer, anomalous, erratic, odd, strange, bizarre, extraordinary, peculiar, uncommon, comical, fantastic, preposterous, unique, crotchety, funny, quaint, unmatched, curious, grotesque, ridiculous, unusual, droll, laughable, singular, whimsical, eccentric, ludicrous Antonyms: common, familiar, normal, regular, customary, natural, ordinary, usual
Synonyms for erratic 
