nah
interj. A2 Elementary US //ˈnɑ// UK //nˈɑː// nah Informal
interj. a casual way to say no. You use it in relaxed conversations with friends.
interj. an informal negative response used in spoken English. It replaces 'no' or 'no, it is not' in casual contexts.
Do you want coffee? Nah, thanks.
She asked if I wanted to go out, but I said nah because I was tired.