虚脱 (きょだつ)lethargy; despondency; mental numbness

lethargy; despondency; mental numbnessnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru
(physical) collapse; prostrationnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

虚脱, its kanji, and other words that share them.Open this graph

Kanji in 虚脱

虚偽きょぎfalsehood; untruth
謙虚けんきょmodest; humble
虚構きょこうfiction; fabrication
廃虚はいきょruins; abandoned building
空虚くうきょemptiness; hollowness
虚々実々きょきょじつじつfull of wiles and tricks; match between persons equal in shrewdness mobilizing all the tricks each can muster
虚しいむなしいempty; void
虚像きょぞうvirtual image
脱税だつぜいtax evasion
離脱りだつwithdrawal; secession
脱出だっしゅつescape; break-out
脱退だったいwithdrawal (e.g. from an organization); secession
脱皮だっぴecdysis; shedding (of skin)
脱却だっきゃくridding oneself; freeing oneself of
脱するだっするto escape from; to get out
脱水だっすいevaporation; dehydration

See how 虚脱 connects to the rest of Japanese.