A more derogatory version of half caste
used to describe people of mixed race
. Made more offensive maybe by the implied casually dismissive nature of the phrase. Often pronounced arf chat
Regionally popular in the UK (South Eastern England among older people and possibly a phrase coined by soldiers during the British colonial occupation of India in the 19th century.
“Ooh… what a beautiful baby. Shame she looks a bit half chat though. Who's the father?”