The phrase the idol repeatedly snapped shocked the world.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means shock, so the verb version is to be shocked or to be amazed.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
If you were going to be shocked, you'd shout, "ACK (あき)!"