mooch 
(mch) Informal
(mch) Informal v. mooched, mooch·ing, mooch·es
v.tr.
1. To obtain or try to obtain by begging; cadge. See Synonyms at cadge.
2. To steal; filch.
v.intr.
1. To get or try to get something free of charge; sponge: lived by mooching off friends.
2. To wander about aimlessly.
3. To skulk around; sneak.
n.
1. One who begs or cadges; a sponge.
2. A dupe, as in a confidence game.
[Middle English mowchen, probably from Old French muchier, to hide, skulk.]
moocher n.