Denshi Jisho — Online Japanese dictionary

Found 6 sentences.

にゃにゃ鳴く Cats go mew, mew.
にゃにゃいいつづけた The cat continued to mew.
帽子ぬれてにゃにゃになった The hat got wet and went limp.
バッグ入っていたニャニャなっていた。 The candy I had in my bag went mushy in the heat.
今更そんなこと言ったにゃ、火に油注ぐことになる For you to come out and say that kind of thing now would just be pouring oil on the fire.
母ちゃん同じいってたからどうしたってんオレにゃ関係い。 Mum said the same thing. But, so what? It's got nothing to do with me.