snot-nosed
snot-nosed ▶adjective informal childish and inexperienced (used as a general term of abuse ): a boy at thirteen is a snot-nosed kid . • (of a person ) considering oneself superior; conceited: a snot-nosed snob.
snot-nosed ▶adjective informal 1 childish and inexperienced: what would I be doing with a snot-nosed kid like him? 2 considering oneself superior; conceited: a snot-nosed snob.