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Pronunciation varies by accent · noun
of a woman, an aunt of one's niece or nephew who is not one's sister; a co-sister-in-law as common aunt to the children of two women's married siblings..
A few years ago, my sister and co-aunt Judy started flying [our niece and nephew] Violet and Dash down to California to spend a week with her
Use co-aunt when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Co-aunt means of a woman, an aunt of one's niece or nephew who is not one's sister; a co-sister-in-law as common aunt to the children of two women's married siblings..
Common synonyms include co-sister-in-law.
The opposite depends on the specific sense.
A few years ago, my sister and co-aunt Judy started flying [our niece and nephew] Violet and Dash down to California to spend a week with her
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