したをまく
to be amazed
舌を巻くことが大切です。
It is important to be amazed.
Memorize this verb with a full example sentence rather than just the dictionary form. N1 vocabulary — this word appears in formal writing and news articles.
From the JLP Quiz question bank — the word in the form it is actually tested in.
「舌を巻く」の意味として最も適切なものはどれですか。
Answer: 非常に驚いて感心する