なんとも

nothing wrong, perfectly fine, not think anything of, not mind

→ 何とも
なんと Wow!, what a surprise! + も Emphasis (also/even)
adverb Rare #38,244
nothing wrong, perfectly fine Usually used with ない.
JA: 今日は体がなんともない。
EN: I feel perfectly fine today.
not think anything of, not mind Usually used with a negative form of 思う.
JA: 彼は一人で食べることをなんとも思っていない。
EN: He doesn't think anything of eating alone.

エンジンはなんともないが車が動かない。

The engine is fine, but the car won't move.

体なんともないか

Is anything wrong with your body?

— 火垂るの墓 (1988)