Meaning & Definition of Erratic in English

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"

2. Having no fixed course

• "An erratic comet"

• "His life followed a wandering course"

• "A planetary vagabond"

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