Not understanding at all with 全然〜ない

Manga panel from ご注文はうさぎですか? showing example of Not understanding at all with 全然〜ない.
ご注文はうさぎですか? » Volume 1 » Page 106

During an underwater-breath-holding contest, Cocoa begins a game of charades. Her gestures are unclear to Syaro.

シャロ:
全然(ぜんぜん)わからない
“I don't understand at all.”
Literal: “I do not understand at all.”

Key Points

1全然(ぜんぜん)〜ない means not at all
  • 全然(ぜんぜん) works with negative わからない to deny any understanding of Cocoa’s gestures.
2わからない describes failure to understand
  • The subject “I” and object “what you mean” are omitted because Syaro is reacting to the charades in front of her.
ご注文はうさぎですか? © its respective creators. It is used here for educational commentary.