1‘he had an impulsive nature’
impetuous, spontaneous, hasty, passionate, emotional, uninhibited, unrepressed, abandoned
rash, reckless, foolhardy, madcap, devil-may-care, daredevil, hot-headed, wild, daring, adventurous
2‘his impulsive decision to leave his job and join the army’
impromptu, snap, spontaneous, unpremeditated, spur-of-the-moment, extemporaneous
impetuous, precipitate, hasty, headlong, rash, reckless, incautious, imprudent, injudicious
sudden, quick, ill-considered, ill-thought-out, unplanned, thoughtless, unthinking
We take a look at several popular, though confusing, punctuation marks.