An extreme state of adversity; the lowest point of anything.

synonym: low-water mark.

Roget 211: base, basement; plinth, dado, wainscot; baseboard, mopboard^†; bedrock, hardpan [U.S.]; foundation etc. (support) 215; substructure, substratum, ground, earth, pavement, floor, paving, flag, carped, ground floor, deck; footing, ground work, basis; hold, bilge.    bottom, nadir, foot, sole, toe, hoof, keel, root; centerboard.    ... show more

The point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected.

Dutch: voetpunt, nadir
Polish: nadir