waha kau
1. (noun) unreliable talk, rumour, empty talk.
E kōrerotia ana kai te hiahia a Waikato kia whakamātau ki te tango mai i ōna whenua kua riro i te Pākehā. Otirā he waha kau ia, he kōrero noa iho (TWM 14/6/1866:100). / It is being said that Waikato want to try to take back its lands that the Pākehā have obtained, but it's only rumour, just talk.
Synonyms: kōrero takuahi, tara, wawara, kōhimuhimu, kohimu, kōhumuhumu, tūtara
2. (noun) unreliable person - a person who does not keep their word.
Kāore noa anō kia tae mai tana reta e whakaū ana i tāna i kī ai - he waha kau pea (HJ 2015:39). / Her letter has in fact not yet arrived confirming what she said - perhaps she's an unreliable person.