impulse

noun [C/U] (DESIRE)

/ˈɪm·pʌls/

Definition

› a sudden, strong desire to do something: [+ to infinitive] I had this impulse to dye my hair red. › If you do something on impulse, you do it because you suddenly want to: [U] I bought this expensive sweater on impulse.

(Definition of impulse noun (DESIRE) from the Cambridge Academic Content Dictionary © Cambridge University Press)

to refuse to accept something or someone because you feel that they are not worth having

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