Rhoticity in English

The distinction between rhoticity and non-rhoticity is one of the most prominent ways in which varieties of the English language are classified. In rhotic accents, the sound of the historical English rhotic consonant, /r/, is preserved in all phonetic environments. In non-rhotic accents, speakers no longer pronounce /r/ in postvocalic environments: when it is immediately after a vowel and not followed by another vowel. For example, a rhotic English speaker pronounces the words hard and butter as /ˈhɑːrd/ and /ˈbʌtər/, but a non-rhotic speaker "drops" or "deletes" the /r/ sound and pronounces them as /ˈhɑːd/ and /ˈbʌtə/. When an r is at the end of a word but the next word begins with a vowel, as in the phrase "better apples," most non-rhotic speakers will preserve the /r/ in that position (the linking R), because it is followed by a vowel.

The rhotic dialects of English include most of those in Scotland, Ireland, the United States, and Canada. The non-rhotic dialects include most of those in England, Wales, Australia, New Zealand, and South Africa. Among certain speakers, like some in the northeastern coastal and southern United States, rhoticity is a sociolinguistic variable: postvocalic /r/ is deleted depending on an array of social factors, such as being more correlated in the 21st century with lower socioeconomic status, greater age, particular ethnic identities, and informal speaking contexts. These correlations have varied through the last two centuries, and in many cases speakers of traditionally non-rhotic American dialects are now rhotic or variably rhotic. Dialects of English that stably show variable rhoticity or semi-rhoticity also exist around the world, including many dialects of India, Pakistan, and the Caribbean.