cadaverous, emaciated, fleshless, gaunt, hollow-cheeked, lantern-jawed, skin-and-bone (informal) wasted, worn to a shadow
English Collins Dictionary - English synonyms & Thesaurus
1 adj Skeletal means relating to the bones in your body.
...the skeletal remains of seven adults., ...the skeletal system.
2 adj A skeletal person is so thin that you can see their bones through their skin.
...a hospital filled with skeletal children.
3 adj Something that is skeletal has been reduced to its basic structure.
Passenger services can best be described as skeletal.
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