dé·jà vu 
(dā′zhä v)
(dā′zhä v)n.
1. Psychology The illusion of having already experienced something actually being experienced for the first time.
2.
a. An impression of having seen or experienced something before: Old-timers watched the stock-market crash with a distinct sense of déjà vu.
b. Dull familiarity; monotony: the déjà vu of the tabloid headlines.
[French déjà-vu : déjà, already (from Old French des ja, from now on, from des, from + ja, now + from Latin iam) + vu, seen (from Old French veu, from Vulgar Latin vidūtus, alteration of vīsus, past participle of vidēre, to see; see weid- in the Appendix of Indo-European roots).]