korenga, n. Non-existence, absence, non-occurrence, etc. He kitenga no matou i te korenga o te kai taua wahi i mahue ai.
whakakore, whakakorekore, whākorekore, v.t. 1. Cause not to be.
2. Deny. Whakorekore tonu mai ia ki taua korero.
Williams Dictionary