"fickler" in the adjective sense
1. fickle, volatile
marked by erratic changeableness in affections or attachments
"fickle friends"
"a flirt's volatile affections"
2. erratic, fickle, mercurial, quicksilver
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"
Source: WordNet® (An amazing lexical database of English)
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