vin·e·gar 
(vĭnĭ-gər)
(vĭnĭ-gər)n.
1. A sour liquid containing acetic acid, produced by fermenting a solution (such as wine or fermented rice) containing ethanol produced by a previous fermentation, used as a condiment and preservative.
2. Sourness of speech or mood; ill temper.
3. Liveliness and enthusiasm; vim.
[Middle English vinegre, from Old French vinaigre : vin, wine (from Latin vīnum) + aigre, sour (from Vulgar Latin *acrus, from Latin ācer; see ak- in the Appendix of Indo-European roots).]
- on-the-job
- on the level
- on the line
- on the loose
- on the make
- on the march
- on the market
- on the mend
- on the money
- on the move
- on the nose
- on the off chance
- on the onehand
- on the order of
- on the other hand
- on the outs
- on the part of
- on the prowl
- on the qui vive
- on the rack
- on the rag
- on-the-record
- on the right foot
- on the road
- on the rocks