fum·ble 
(fŭmbəl)
(fŭmbəl)v. fum·bled, fum·bling, fum·bles
v.intr.
1. To touch or handle nervously or idly: fumble with a necktie.
2. To grope awkwardly to find or to accomplish something: fumble for a key.
3. To proceed awkwardly and uncertainly; blunder: fumble through a speech.
4.
a. Football To drop a ball that is in play.
b. Baseball To mishandle a ground ball.
v.tr.
1. To touch or handle clumsily or idly: "fumbled the skeleton key into the lock and turned it" (Bentley Dadmun).
2. To make a mess of; bungle. See Synonyms at botch.
3. To feel or make (one's way) awkwardly.
4.
a. Football To drop (a ball) while in play.
b. Baseball To mishandle (a ground ball).
n.
1. The act or an instance of fumbling.
2. Sports A ball that has been fumbled.
[Middle English fomelen, to grope.]
fumbler n.