weary (adj.)
Old English werig "tired, exhausted; miserable, sad," related to worian "to wander, totter," from Proto-Germanic *worigaz (cognates: Old Saxon worig "weary," Old High German wuorag "intoxicated"), of unknown origin.
weary (v.)
Old English wergian "to be or become tired" (intransitive), gewergian "to exhaust, to make tired" (transitive), from the source of weary (adj.). Related: Wearied; wearying.