Languages › French Learn the French Word 'Coucou' Share Flipboard Email Print Bambu Productions/The Image Bank/Getty Images French Vocabulary Pronunciation & Conversation Grammar Resources For Teachers by ThoughtCo Updated September 24, 2018 The French word "coucou," [koo koo] can be used as an exclamation meaning "hello" or "hi." It is similar to the English excalamation, "peek-a-boo!" It is also used to refer to the cuckoo clock. Examples Coucou, Pierre, c'est moi !Hi, Pierre, it's me!Coucou, il y a quelqu'un ?Hello, is anyone there? Continue Reading