guay
/ˈɡwai/ · B1 · adv
cool
🕶️ Sounds like guy: a cool guy is a guay guy
Guay rhymes with the English word why and sounds close to guy. Spaniards say ¡Qué guay! for How cool! It is casual Spain slang, used as an adjective or an adverb, as in lo pasamos guay (we had a great time).