ガミガミnagging, griping

父(ちち)にガミガミと叱(しか)られました。

I was nagged and scolded by my father. {nagging, griping}

ガミガミと小言(こごと)を言(い)うおばさんが嫌(きら)いだ。

I hate the aunt who keeps nagging and griping. {nagging, griping}

頭(あたま)からガミガミと怒鳴(どな)られて、怖(こわ)い思(おも)いをした。

I was scared after being nagged and yelled at from the start. {nagging, griping}

ガミガミ怒鳴(どな)り散(ち)らすその先生(せんせい)は生徒(せいと)に嫌(きら)われています。

The teacher who is always nagging and shouting is disliked by the students. {nagging, griping}

頭(あたま)からガミガミ言(い)ったところで、子供(こども)には重要(じゅうよう)なことが伝(つた)わりません。

Even if you nag from the start, important things will not get across to children. {nagging, griping}