What does nadir mean?
Nadir means the lowest point in a situation, particularly in a person's fortunes, career, or level of success. It is more forceful and literary than simply “low point,” suggesting a moment of extreme decline or the worst stage that something has reached. For example, a performer might describe a critically unsuccessful film as the nadir of their career. Because nadir is related to the idea of the lowest point in the sky, it can also refer technically to the point on the celestial sphere directly beneath an observer, opposite the zenith. That astronomical sense is rare in everyday use, whereas the figurative sense is now dominant. The word is especially useful when describing a conspicuously bad or pivotal low point, but it can sound overly dramatic in casual contexts.
nounThe lowest point in a process, condition, or person's fortunes or career. In astronomy, it is also the point on the celestial sphere directly below the observer, opposite the zenith.
- The lowest point in someone's fortunes, career, prospects, or experience.
- The point on the celestial sphere directly beneath an observer, opposite the zenith.
"After years of decline, the company reached the nadir of its fortunes before beginning a slow recovery."
"The defeat marked the nadir of an already disappointing season."
"At nadir, the Moon lies directly below the observer on the celestial sphere."
The plural is grammatical but uncommon; singular constructions such as “the nadir of” are usually preferred.
"The fortunes of several industries reached their nadirs during the same year."
From an Arabic term meaning “opposite point,” nadir became the sky's floor—the point directly beneath you.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does nadir come from?
English borrowed nadir in the early 17th century through French from Arabic nadīr, a term meaning “opposite point” and referring to the point opposite the zenith. Arabic nadīr was borrowed from Persian nādir, meaning “opposite.” The word initially described a position in the sky and was later extended figuratively to the lowest point in circumstances, fortune, or achievement.
How nadir is actually used
In modern general use, nadir is formal and somewhat literary. It often conveys a profound or irreversible low point, although it can be used more neutrally. The astronomical sense is uncommon outside technical contexts.