hide-and-seek (n.)

children's game, by 1670s, replaced earlier all-hid (1580s). See hide (v.1) + seek (v.). Form hide-and-go-seek recorded from 1767, also hide-and-find (1750). Variant hide-and-coop is from 1827. Also I-spy or hy-spy (1777). Another old name for it was king-by-your-leave (1570s).