The reading for this word is screwed up, though if we're lucky, you already know the word for cute. It seems to have injected itself into American and English culture a decent amount, anyways. If you are one of the lucky ones, you'll know that this word is read as かわいい. If you're not, think of the cute thing being a cow. Then you say, "that cowはいい" (かわい), or "that cow is good" because it's so cute.