Start with your mouth slightly open, then close your jaw slightly as your lips round. Shift your tongue back slightly, then stretch the back up.
How to pronounce overcast in American English
Americans pronounce overcast as OH-ver-kast (/ˈoʊvərˌkæst/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The overcast sky made the day feel gloomy and dark".
Now you try.
Record yourself saying "overcast" and play it back. The mic stays on your device — nothing's uploaded.
Every sound in "overcast".
3 syllables, 7 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
Raise the back of your tongue to touch the soft palate (velum). Stop the air, then release.

Drop the jaw noticeably. Keep the body of the tongue low and forward, and don't let the back of the tongue raise toward the soft palate. Pull the lip corners back slightly, almost a starting smile.

Place your tongue tip near the roof of your mouth behind your top teeth. Push air through the narrow gap. No voicing.

Touch the tip or front edge of your tongue to the roof of your mouth just behind your teeth. Keep your jaw relaxed. Stop the air, then release with a puff.

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Common pronunciation mistakes in American English.
The textbook way isn't wrong — it's just not how anyone actually says it.
Stressing the wrong syllable.
Stress falls on the first syllable, not the others. Stretch OH — keep everything else short and quick.
Pronouncing the "R" too clearly.
Americans use a relaxed retroflex R — the tongue curls back rather than rolling. The R is one continuous sound with the vowel before it, not two separate sounds.



