Synonyms of erratic in English:


See US English definition of erratic

See UK English definition of erratic

See Spanish definition of desigual


1‘can you explain his swings of mood, his erratic behaviour?’

unpredictable, inconsistent, changeable, variable, inconstant, uncertain, irregular, unstable, turbulent, unsteady, unsettled, unreliable, undependable, changing, ever-changing, volatile, varying, shifting, fluctuating, fluid, mutable, protean, fitful, wavering, full of ups and downs, peaky
mercurial, capricious, whimsical, fickle, flighty, giddy, impulsive, wayward, temperamental, highly strung, excitable, moody
informal blowing hot and cold
technical labile
rare fluctuant, changeful

predictable, consistent