What is another word for Betacism?
Pronunciation: [bˌiːtəsˈɪzəm] (IPA) 
Betacism, also known as th-fronting, is a phenomenon where the voiceless dental fricative sound 'th' is replaced with the voiceless labiodental fricative 'f' or voiced labiodental fricative 'v'. Synonyms for betacism include the fronting of dental consonants, labialization of dental consonants, and th/s substitution. This is a common occurrence in English dialects such as Cockney and African American Vernacular English, where 'th' is pronounced as 'f' (think becomes fink) or 'v' (bother becomes bover). While considered non-standard in Standard English, it is widely accepted and understood in everyday conversation in these dialects.
