intermarry
🇺🇸
/ˌɪntərˈmæri/
🇬🇧
/ˌɪntəˈmæri/
to marry someone from a different background
In some cultures, it's common for people to intermarry, like when a Christian and a Muslim get married.
to marry someone within your own family or group
In some families, cousins intermarry, which is when they get married to each other.