unexpected and sudden

happening suddenly and unexpectedly

amusing; odd

amusing

foolish (and showing self-importance)

stupid

without reason, sense or good judgement; silly

nonsensical, idiotic

contrary to rules, to what is normal and established

random, variable

deserving to be laughed at; foolish

stupid, funny

irregular; happening in, affected by, spasms

twitching, erratic

not similar in size, quality etc; (of a surface) not level, not smooth

not smooth or balanced