Short vowel contrast

Short O vs Short U Minimal Pairs

/ɑ/ and /ʌ/ pronunciation, listening, and reading practice

The common North American short O is lower and farther back than short U. This contrast changes many high-frequency words.

Produce both sounds accurately

What changes in the mouth?

/ɑ/

Short O

Open the jaw and keep the tongue low-back.

/ʌ/

Short U

Close the jaw slightly and move the tongue toward the center.

Accuracy note: Accent matters for short O, but /ɑ/ and /ʌ/ remain different phonemes in standard North American English.

10 reviewed contrasts

Listen to the minimal pairs

Play both words in a row. First decide whether they sound the same or different; then repeat each word without adding an extra vowel.

Interactive practice

Listen and choose

Hear one word, then select the word you heard. Complete six questions and replay whenever you need to.

Question 1 of 6Score: 0

Listen carefully, then choose.

Meaning in context

Read both sounds in sentences

1The pup sat on the cot.

2Shut the hot oven.

3The dog dug by the hut.

4Do not cut the sock.

Read once slowly for accuracy, then reread at a natural pace. Ask the learner to point to each target word and explain its meaning.

Deliberate practice

A five-minute teaching routine

1. Listen without text

Play four words and ask the learner to identify sound A or sound B.

2. See and say

Reveal the pair, say both words, and check the mouth cue above.

3. Use meaning

Read one sentence and discuss how changing the sound changes the word.

4. Recall

Compare cot and cut. Keep cot open and back; make cut shorter, smaller, and more central.

Offline review

Print this sound contrast lesson

The print view includes the mouth cues, reviewed pairs, accuracy note, sentences, and practice routine.