Yours, Etc.: Origins and Uses of 8 Sign-Offs
"split or cut into strips, pare off, grind away," 1825, of Scandinavian origin, cf. Old Norse skifa "to cut, split," from Proto-Germanic *skif-, from Proto-Indo-European *skei- "to cut, split" (see shed (v.)). Related: Skived; skiving.
"evade duty," usually with off, 1919, probably from earlier sense "move lightly and quickly, dart" (1854), of unknown origin. Related: Skived; skiving.
To shirk duty: skive off for a rest
[1919; originally armed forces]