moumou - waste (n): to be wasteful (v)
Kua moumou rātou i te rehu horoi.They have wasted the soap powder.Simple sentences: past completed tense - kua
He moumou tāima aua korikori.Those exercise classes are a waste of time.That aforementioned thing - taua, aua
Ki a ia, he moumou taima tēnei.To him/her this is a waste of time.