When "legerity" first appeared in English in 1561, it drew significantly upon the concept of being "light on one's feet," and appropriately so. It is derived from words in Middle and Old French and ultimately Latin that all mean "light in weight." These days, "legerity" can describe a nimbleness of mind as well as of the feet. A cousin of "legerity" in English is legerdemain, meaning "sleight of hand" or "a display of skill or adroitness." "Legerdemain" comes from the French phrase leger de main, meaning "light of hand."