1. the lowest or worst points of something
Usage: plural of nadir
2. the points on the celestial sphere directly opposite the zenith and directly below an observer
Usage: astronomy; plural of nadir

Examples

• The company hit several nadirs during the economic recession.
• His career had multiple nadirs before he finally found success.
• The team’s performance reached new nadirs this season.
• Astronomers calculate the nadirs for different observation points.
• The stock market experienced its nadirs in March and October.
• These nadirs in public opinion were followed by gradual recovery.