kia kaha Share definition Flag Phrase from the New Zealand Maori language, translated as "Be Strong" in the meaning of offering encouragement to succeed when troubled. comment: "not sure if things are going to go well today"response: "kia kaha!" kia kaha by 39tiro March 21, 2011 0 0 Get merch Get the kia kaha mug. Buy Now — $32.95 See more merch