An extinct word from the English language once referring to the eyes after waking from a night's sleep, the word "gumbled" can be found again in modern English during a quick search engine look.
But, in reality, rather than the word making a comeback, it seems to me that it tends to surface often as a confusion for the word "jumbled"--or perhaps a (possibly more often unconscious rather than conscious) combining of "gum" and "jumbled" to stress a more difficult ("gummed-up") sort of disarray or confusing situation.
