いとも

adverb

extremely; very; most

Emphatic adverb used to intensify adjectives or verbs, often with a literary or formal nuance. Common in written language and formal speech.

• 彼かれの話はなしはいとも興きょう味み深ぶかかった。

  His story was extremely interesting.

• その問もん題だいはいとも簡かん単たんに解かい決けつされた。

  The problem was solved most easily.