erratic
adjective
[ ɪˈratɪk ]
• not even or regular in pattern or movement; unpredictable.
• "her breathing was erratic"
Similar:
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,
blowing hot and cold,
labile,
fluctuant,
changeful,
erratic
noun
• a rock or boulder that differs from the surrounding rock and is believed to have been brought from a distance by glacial action.
• "the source of stone for the whetstones may have been glacial erratics"
Origin:
late Middle English: from Old French erratique, from Latin erraticus, from errare ‘to stray, err’.
