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:
You're starting to compete and to argue with someone, who is yelling at you: "You are so (あらそ) stupid!". You might want to imagine this in an accent that gets you closer to the Japanese pronuncation.
Please don't argue about me!
Tofugu workers are competing with each other for the position of president.
You are so chill. It’s great hanging out with you. You know what? We’ve never had an argument yet, either. That’s crazy, isn’t it?