abnormally thin 
WordReference Random House Learner's Dictionary of American English © 2025
e•ma•ci•ated /ɪˈmeɪʃiˌeɪtɪd/USA pronunciation  
adj. 
WordReference Random House Unabridged Dictionary of American English © 2025- abnormally thin, esp. because of starvation or illness.
 
e•ma•ci•at•ed 
(i mā′shē ā′tid),USA pronunciation adj. 
 
- marked by emaciation.
 
- emaciate + -ed2 1655–65
 
-  thin, wasted, puny, gaunt, haggard, scrawny.
 
Collins Concise English Dictionary © HarperCollins Publishers::
e•ma•ci•ate 
(i mā′shē āt′),USA pronunciation v.t., -at•ed, -at•ing. 
- to make abnormally lean or thin by a gradual wasting away of flesh.
 
- Latin ēmaciātus, wasted away, equivalent. to ē- e- + maciātus, past participle of maciāre to produce leanness (maci(ēs) leanness + -ātus -ate1)
 - 1640–50
 
Collins Concise English Dictionary © HarperCollins Publishers::
- (usually tr)
to become or cause to become abnormally thin  
'emaciated' also found in these entries (note: many are not synonyms or translations):