lose animation or strength; become weak
It was the height of summer, when people and animals languish in the midday heat.
languere (to be weak or faint) (Latin)
sounds like EXTINGUISH-wen a person losing strength aur virality or become exhausted then we say that he is extinghuishing lang (LAckiNG)a uish (wish). think of a person who is lacking a wish to do something, and such kind of a person automatically loses his strength.