Here's what rhymes with interbreed.

Consider these alternatives

hybridize / size intermingle / single interbreeding / leading mingle / single copulate / late procreate / late intermarried / carried fraternize / size moralize / size commingle / single recombine / line collude / food equilibrate / late mated / dated polymerize / size dabble / battle overlap / that conflated / stated infect / effect domesticated / indicated crossbred / said abscond / want