exertion
1. [ noun ] (work) use of physical or mental energy; hard work
Synonyms: effort sweat travail elbow_grease
Examples:

"he got an A for effort" "they managed only with great exertion"

Related terms: labor exercise trouble struggle application strain supererogation overkill pull overexertion least_effort friction labor
Similar spelling:   excretion
  exert
  exhortation
  exsert
  excretory
  excreting
  exhort
  excrete
  excreta
  exordium