tāima - time
He moumou tāima aua korikori.Those exercise classes are a waste of time.That aforementioned thing - taua, aua
Moumou tāima pēhea nei?A waste of time in what way?
Whitu karaka te tāima tīmata o te purei kāri.7pm is the time the card games will start.
Ki a ia, he moumou taima tēnei.To him/her this is a waste of time.