pre school (noun) preschool: nursery school
Detalii: preschool is the noun (for the place) and pre-school is the adjective meaning 'before school'
Sinonime: act up,
caper,
carry on*,
cavort,
clown, fool around,
joke, misbehave, play, play jokes, romp, roughhouse,
show off, whoop it up
Antonime: be serious