How does Received Pronunciation differ from Inland Northern American English?

Received Pronunciation (RP) and Inland Northern American English differ primarily in their treatment of specific vowels, diphthongs, and consonant sounds.1

Vowel and Diphthong Differences

• Vowel Quality: Inland Northern American English often uses a central vowel for words like bud and cut, whereas RP uses a different vowel quality.1
• The Trap-Bath Split: Before fricatives like s, f, and θ (as in thin), RP uses a long, low back vowel in words like bath. In contrast, Inland Northern American English uses a short front vowel, similar to the sound in bad.21
• Glide Omission: In words like tulips, dew, and news, RP includes a glide (diphthong), while Inland Northern American English typically pronounces these without the glide.21
• Low Vowels: Words such as cod, box, and hot are pronounced with a short, low front sound in Inland Northern American English, differing from the RP equivalents.1

Consonant Differences

• Rhoticity: Inland Northern American English is rhotic, meaning the r sound is preserved after vowels in words like door and flower. RP is non-rhotic, dropping the r in these positions.21
• T-Voicing: In Inland Northern American English, the t between vowels is often voiced, making metal and matter sound similar to medal and madder. This t is also softer and less aspirated than in RP.1