1914, member of Industrial Workers of the World (I.W.W.). Probably some sort of elaboration of the W aspect of the acronym.
wobbly (adj.)
1849, wabbly; see wobble (v.) + -ly (1). Form with -o- is from 1851. Related: Wobbliness.
the ladder felt a little wobbly
a wobbly chair with shaky legs
wl-
woad
wobbegong
wobble
wobbly
Wobbly
Woden
woe
woebegone
woeful
wog