1. harsh or demanding conditions; severe difficulties or hardships
Usage: plural form of rigor
2. strict precision and thoroughness in method or approach
Usage: plural form of rigor

Examples

• The rigors of military training prepared them for combat.
• She endured the rigors of medical school to become a doctor.
• The rigors of winter made travel nearly impossible.
• Academic rigors at the university challenged even the best students.
• The rigors of scientific research require careful attention to detail.
• Mountain climbers must prepare for the rigors of high altitude.
• The rigors of professional athletics demand constant training.