impulsively

/ɪmˈpʌlsɪvli/
adverb
  1. In a way that is sudden and not planned, without thinking carefully.
    • She impulsively dyed her hair bright pink on a whim.
    • They impulsively booked a flight to Paris after seeing a cheap deal.
    • He impulsively agreed to help without checking his schedule.
Antonyms