- Acid found in vinegar - Acidic vinegary - Derived from vinegar, etc. - Expert has nervous twitch about vinegar - Of or like vinegar - Sour - Trace tickets that are made partly of vinegar
- Grind (knife) - Hone - Make a point about nasty rash on writer - Whet - To make sharp. - To give a keen edge or fine point to; to make sharper; as,
to sharpen an ax, or the teeth of a saw. - To render more quick or acute in perception; to make more
ready or ingenious.