breed

breed like rabbits (informal)

if people breed like rabbits, they produce too many babies very quickly. It's like I was saying to Derek, they all intermarry and they breed like rabbits.

See also: like, rabbit

Familiarity breeds contempt.

something that you say which means if you know someone very well or experience something a lot, you stop respecting them. You two are going to find it difficult living and working together. Familiarity breeds contempt, you know.