Not at all with 全然〜ない
The adverb 全然 followed by a negative verb or adjective gives the meaning “not at all”, such as “do not understand at all” or “am not happy at all”.
Examples
ご注文はうさぎですか? » Volume 1 » Page 106
The adverb 全然 followed by a negative verb or adjective gives the meaning “not at all”, such as “do not understand at all” or “am not happy at all”.