the world > physical sensation > sleeping and waking > weariness or exhaustion > [adjective] > capable of being wearied or exhausted (27)
That may be (easily) tired.
Capable of being fatigued; easily tired.
Easily tired or fatigued; capable of becoming wearied or fatigued; (in later use often) spec. (chiefly humorous) not indefatigable, not tirelessly…
Capable of being wearied.