adverb
(not) at all; (not) a bit; (not) in the least
Used with a negative predicate to emphasize complete absence or negation. Similar to ちっとも, but ちょっとも is less common and may sound slightly softer or dialectal.
See also: ちっとも
彼の言っていることはちょっともわからない。
I don't understand what he's saying at all.
この料理はちょっとも美味しくない。
This dish isn't tasty at all.