Astronomy A point on the celestial sphere directly below the observer, diametrically opposite the zenith.(noun)
The lowest point: the nadir of their fortunes. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "nadir" in a sentence
"To see Wes Craven descend back into his late-80s nadir is a tragic thing indeed."
"The nadir is a middle eight that involves the curly-haired one intoning, "When IIIIIII talk to youuuuuuuuuuuuu, on the phhhooooonnnnneee" as if he actually hates his lover and wants her to bleed from the ears."
"But market participants expect a near-term nadir for the cash rate of around 2.5%."