(especially of a young person) rude and not showing respect

impulsive, brazen

without reason, sense or good judgement; silly

nonsensical, idiotic

said, made or done (too) quickly

speedy; without much thought

not judged well; not wise

unwise, careless

not paying attention to the conventions of society; incorrect

not suitable

not being polite or caring about causing offence

without much thought

not advisable

not recommended

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

not thinking or caring about the effects, consequences

irresponsible in thought, deed

unintelligent; foolish

not intelligent; irresponsible

(of words, remarks) spoken thoughtlessly

rash