Definitions

1. verb

to mix different breeds or types of something, especially animals, to create a hybrid or a blend.

“The breeder decided to mongrelise the purebred dogs to make them healthier.”

2. verb

to make something mixed or impure.

“The noble bloodline has been mongrelised over the centuries due to intermarriage.”

3. noun

the act of mixing different breeds or types of something.

“The mongrelisation of the species led to a loss of genetic diversity.”