Fatigue

Fatigue
That state, following a period of mental or bodily activity, characterised by a lessened capacity for work and reduced efficiency of accomplishment, usually accompanied by a feeling of weariness, sleepiness, or irritability.
Get tired of something or somebody.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.Tired, exhausted.