From skeletal + -ly.
skeletally (comparative more skeletally, superlative most skeletally)
- Pertaining to the skeleton.
- In a skeletal manner; like a skeleton.
- 1977, Alistair Horne, A Savage War of Peace, New York Review Books 2006, p. 131:
- A skeletally tall montagnard […], Amirouche had been a member of both the religious Ulema and, in Paris, of Messali's M.T.L.D.