Cace

Short and oh-so-sweet, Cace has to be one of the cutest nicknames for Casey. This gender-neutral form is of Irish descent and derives from the Irish name Cathasaigh. Cace brings heroic vibes with its meanings of "alert," "watchful," and "brave." Yes, your little spy kid will make an excellent babysitter—whether it be the class pet or their littlest sibling. They also undoubtedly be as brave as a lion!