Informal:
* లేదు (leedu): This is the most common and direct way to say "no" or "never mind" in informal situations.
* పర్వాలేదు (parvaaledu): This means "it's okay" or "don't worry about it" and is another common way to express "never mind" in informal settings.
* సరే (sare): This means "okay" and can also be used to dismiss a suggestion or request, similar to "never mind".
Formal:
* వద్దు (vaddu): This is the formal way to say "no" or "never mind."
* కష్టం లేదు (kashtam leedu): This means "there's no problem" or "it's not difficult" and can be used to politely decline something or express that it's not a concern.
The best way to choose the right phrase depends on the situation and your relationship with the person you're talking to.