with the head first; thoughtless(ly) and hurried(ly)

dangerous, reckless

done, acting, quickly and without enough thought or care

acting without thinking

done, doing things, too quick, without enough thought of the possible result; (an appearance, patch, of) tiny red sports on the skin; a sudden spread

careless, impulsive

happening unexpectedly, quickly, without warning

unexpected; happening quickly

(of words, remarks) spoken thoughtlessly

rash