erratic meaning and definition

ERRATIC adjective

Definition of erratic (adjective)

1. liable to sudden unpredictable change
   • "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next"
   • synonyms: fickle, mercurial, quicksilver
2. having no fixed course
   • "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond"
   • synonyms: planetary, wandering
3. likely to perform unpredictably
   • "erratic winds are the bane of a sailor"; "a temperamental motor; sometimes it would start and sometimes it wouldn't"; "that beautiful but temperamental instrument the flute"- Osbert Lancaster
   • synonyms: temperamental