Nah

"You should write a novel or something." "Nah, I don't think so. I can't see myself coming up with anything good, anyways."

Nah, why bother fixing it.

Hey, nah, I got it.

"Have you been here before?" "Nah, this is my first time."

"Do you know what floppy disks are?" "Of course I do!" "Have you ever used one?" "Nah, I haven't."

"Nah, I wouldn't say anything to a guy like Tom." "That's right. Why would you say anything to a blabbermouth like him, of all people?"

"The inhabitants of Earth are so primitive and violent, they seem to be on the point of blowing themselves up. Should we save them?" "Nah."

"What are you drinking there?" "It's sort of like a health drink Mary has concocted from all kinds of natural ingredients. Tastes quite good. Do you want a cup?" "Er, nah, I'll leave it, thanks."

"What's that you're drinking?" "It's like a health drink that Mary's concocted from all sorts of natural ingredients. Tastes quite good. Fancy a cup?" "Er, nah, I'll give it a miss, thanks."

"Tom, did you catch the flu? Are you alright? I hope it's not actually COVID!" "Nah, I'm fine. Thanks."