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Vowel Sounds 18 words

ou/ow

Rule Core

ou / ow are frequent vowel teams in English. Their primary value is the diphthong /aʊ/, a glide from an open vowel to a rounded off-glide, as in bound. ow can also represent /oʊ/ (e.g., snow), depending on lexical and historical factors. In academic vocabulary, ou is usually stable and not reduced.

Articulation Guide

Start with a low, open mouth and the tongue slightly forward. Glide smoothly as the tongue retracts and rises; lips move from neutral to rounded. Airflow must remain continuous.

Word Analysis

  • accountability: ou in count → /aʊ/, clearly audible.
  • acknowledgement: ow in know → /oʊ/, preserved by etymology.
  • bound: classic ou → /aʊ/ with a quick closing glide before /nd/.

Pitfall Alerts

Avoid treating ou/ow as always /aʊ/. Final-position ow and historically marked words often take /oʊ/. Do not reduce ou to schwa in formal vocabulary.

Phonics Breakdown

Open start → tongue retracts and rises → lips round smoothly

Sound Reference

  • Check the root first before assigning /aʊ/ or /oʊ/
  • Focus on a smooth glide, not two separate vowels

Common Mistakes

Reading all ow as /aʊ/
Reducing ou to schwa in long words

Example Words

accountability acknowledgement bound breakthrough councilor counsel denounce dough farmhouse hour

All Words (18)

accountability acknowledgement bound breakthrough councilor counsel denounce dough farmhouse hour housing plough southeast thoughtful through throughout voucher would