Word Origin & History
fumblemid-15c., "handle clumsily," possibly from O.N. falma "to fumble, grope." Similar words in Scand. and North Sea Gmc. suggest onomatopoeia from a sound felt to indicate clumsiness (cf. bumble, stumble, and obsolete English famble, fimble of roughly the same meaning). Related: Fumbled; fumbling.