Slang. To cheat; swindle: "The Swiss have special laws for people who diddle hotels" (John le Carré).
[Perhaps akin to Old English dydrian, to deceive, or from variant of dialectal doodle, fool, simpleton, akin to Low German dudeldopp.]
diddler did'dler n.did·dle2 (dĭd'l)

v., -dled, -dling, -dles. v.tr.
- To jerk up and down or back and forth.
- Vulgar Slang.
- To have intercourse with (a woman).
- To practice masturbation upon.
- To shake rapidly; jiggle.
- Slang. To play experimentally; toy: The children diddled with the knobs on the television all afternoon.
- Slang. To waste time: diddled around all morning.
[Probably alteration of dialectal didder, to quiver, tremble, from Middle English dideren, variant of daderen, doderen, perhaps from Low German.]




