sar·casm 
(särkăz′əm)
(särkăz′əm)n.
1. A cutting, often ironic remark intended to express contempt or ridicule.
2. A form of wit characterized by the use of such remarks: detected a hint of sarcasm in his voice.
[Late Latin sarcasmus, from Greek sarkasmos, from sarkazein, to bite the lips in rage, from sarx, sark-, flesh.]
- look a gift horse in the mouth
- look-alike
- lookalike
- look alive
- look alive/sharp
- look daggers at
- lookdown
- look down nose at
- look down nose on
- look down on
- look down one's nose at
- look down (one's) nose at/on
- look down one's nose on
- look down on/upon
- look down upon
- looker
- looker-on
- look for
- look forward to
- look-in
- looking glass
- look in on
- look into
- lookism
- lookist