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:
Do you know how in the Mario universe all the bad versions are called "WARU" (わる)? For example: "WARUIJI" and "WARIO." That's because they are bad. They come from this kanji. So, if you ever need to remember this reading, just think back to Wario and Waruigi.
This all-you-can-eat sushi restaurant's customer service is unbelievably bad.
Sorry to bother you, but can you steam these veggies for me?
The milk went bad, but I didn’t care.