Deliberate, wilful.
The ability to know something without being taught.
Suggestive of private knowledge or understanding.
Possessing knowledge or understanding; knowledgeable, intelligent.
Shrewd or showing clever awareness; discerning.
Demonstrating knowledge of what is in fashion; stylish, chic.
Given my knowledge about someone or something.
The act or condition of having knowledge.
Acerbic, bitter.
Sour; like vinegar.
Of a liquid, having turned partially or fully to vinegar.
Edward's maiden aunt was a vinegary old soul with a sharp tongue and quick temper; she would not be receiving a wedding invitation.