Over the years I've stuck fast to a possibly self-invented rule that enumerating pairs of things in an out-of-order fashion requires a "respectively": …where x, y, and z are "ecks", "why", and "zed", respectively. But I begin to tire of this redundant usage where it's clearly obvious (or is it?) that the pairs match up n-to-n in the lists. Is this rule I follow a real rule? Can I drop it in what seem to me, the writer, to be patently obvious cases? Answer I don't think it's clearly obvious in all situations that the pairs match up. I guess the main purpose of respectively is precisely to remove any potential ambiguity. Observe: Jane and Joe are beautiful and smart. Jane and Joe are beautiful and smart, respectively. Japanese, Italians, and Russians are good at making sake, grappa, and vodka. Japanese, Italians, and Russians are good at making sake, grappa, and vodka, respectively. So I suppose you should always double-check whet...