Sentence:  His sword fell from his grasp -- his eye, late glaring with the ire of a sticken tiger, -- his brow, late speaking but death, and dark defiance, suddenly sank into the soft <WSD>beseeming</WSD> of gratefulness, and of betokened kindness and feeling. 
Meaning of the word marked with <WSD> tags:  "With some qualifying word": to appear, seem, look.