A ‘postdating’ is an example of the use of a lexical item at a later date than currently recorded and these are important in establishing the longevity of use of a term and whether or not it has become obsolete.

Larry and Bill had planned to hold a white-linen “fancy” fund-raiser dinner in late June or early July, which would bring out the moneyed crowd who “summered” on the Island. If you summer or winter somewhere you are affluent, Larry knew. (Funny, though, he had never heard of anyone who “autumned” in Vermont or who was “springing” in Colorado.)

Aeviternity, the old man said in a matter-of-fact way, shrugging his shoulders. You were in aeviternity. Seeing Jonah's puzzled look and knowing that his charge was not one to rest without the answers he sought, he continued, “… the realm of the angels and saints. What most people mean when they say eternity is actually aeviternity. You see, eternity is unchanging, without beginning or end. Only God is truly eternal.

Both of them were youths of a Sprightly Genius, and of an Alert Apprehension, attended, in the case of GRANDOLPH, with a mighty heat and ebullition of Fancy, which led early to a certain frothiness or ventosity in speech.