godan verb (-mu), intransitive verb
be severely troubled; be completely at a loss
Obsolete verb meaning to be deeply distressed or at one's wits' end. Not used in modern Japanese; the concept is now expressed with phrases like 弱り果てる or 途方に暮れる.
古文では「弱り込む」と書いて、ひどく困り果てる様子を表した。
In classical texts, 弱り込む was written to express a state of being utterly at a loss.