Pretty
Beautiful, Clean
な adjective
Things that are beautiful and lovely are very beautiful, pretty, and often clean, too. You can call someone 綺麗. You can also mention how clean something is with 綺麗. Gives you some insight as to what "beauty" is in Japan, I suppose. Take your baths, folks.
Wondering what the difference is between 綺麗 and 美しい? 美しい is more dramatic, so it implies you’re really blown away by something’s (or someone’s) beauty. 綺麗, on the other hand, is a more everyday word that covers anything that’s beautiful, pretty, or even just clean. In other words, the bar is a bit lower for 綺麗!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
「君みたいに綺麗な女性に会ったのは初めてだよ、サーモン。」「フグったら、ウソばっかり。」
"Salmon, you’re the most beautiful woman I’ve ever met." "Fugu, that’s such a lie."