Decunt is a synonym of uncunt.

In vulgar|rare|lang=en terms the difference between decunt and uncunt

is that decunt is (vulgar|rare) to remove one's penis from a vagina while uncunt is (vulgar|rare) to remove one's penis from a vagina.

As verbs the difference between decunt and uncunt

is that decunt is (vulgar|rare) to remove one's penis from a vagina while uncunt is (vulgar|rare) to remove one's penis from a vagina.