An alternative for fuckable, created by simply adding "able" to the word "Dual." As with Dual, it can be used in social settings where announcing that somebody is fuckable would be innapropriate.
In linear algebra, a square matrix A is called diagable if it is similar to a diagonal matrix. That is, if there exists an invertible matrix P and a diagonal matrix D such that (P ^(− 1)) A P = D