peekaboo
BooBoo (when showing oneself unexpectedly).
US/ˈpikəbu/
» When I play peekaboo with my baby, he stops crying immediately.
WestofEden · Tatoeba · CC BY 2.0 FRDictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.