とんと

completely

Meanings

  1. adverb, onomatopoeia, usually in kana completely; entirely; absolutely
  2. onomatopoeia, usually in kana, with neg. sentence not at all; not in the least

In sentences

この問といの意味いみがとんと分わからない。 I don't understand this question at all. #10655931

バレエのことはとんと分わからない。 I don't know anything about ballet. #11310747