temporary loss of strength and energy resulting from hard physical or mental work
"he was hospitalized for extreme fatigue"
"growing fatigue was apparent from the decline in the execution of their athletic skills"
"weariness overcame her after twelve hours and she fell asleep"
used of materials (especially metals) in a weakened state caused by long stress
"metal fatigue"
(always used with a modifier) boredom resulting from overexposure to something
"he was suffering from museum fatigue"
"after watching TV with her husband she had a bad case of football fatigue"
"the American public is experiencing scandal fatigue"
"political fatigue"
labor of a nonmilitary kind done by soldiers (cleaning or digging or draining or so on)
"the soldiers were put on fatigue to teach them a lesson"
"they were assigned to kitchen fatigues"
A weariness caused by exertion; exhaustion.
"After climbing the steep mountain trail, he was overcome by severe fatigue that made it hard to keep walking."
In plain English: Fatigue is extreme tiredness that makes you feel too worn out to keep going for any length of time.
"After working all day, he felt extreme fatigue and went straight to bed."
Usage: Use fatigue to describe the state of extreme tiredness resulting from prolonged effort, distinguishing it from temporary drowsiness. It is often used in medical contexts regarding chronic conditions but applies generally to any situation involving sustained physical or mental strain.
To tire or make weary by physical or mental exertion.
"The long hike up the mountain left everyone exhausted and fatigued."
In plain English: To fatigue means to make someone feel very tired by working them hard for too long.
"The heavy backpack will eventually fatigue your shoulders if you carry it for too long."
The word entered English from the French fatigue, which originally meant to weary or tire someone. It traces its roots back to the Latin verb fatigare, carrying the same sense of causing exhaustion or harassment.