long o

Rule Core

The oa long vowel represents /oʊ/, the long sound of the letter O. It commonly appears in stressed syllables, especially in one-syllable words, followed by a consonant (e.g., boat, road). Orthographically, when two vowels appear together, the first often takes the long sound while the second is silent.

Articulation Guide

To produce /oʊ/, raise the back of the tongue slightly and retract it. Begin with relaxed lips, then round them smoothly. Airflow is continuous and voiced, creating a gentle glide from /o/ toward /ʊ/ without interruption.

Word Analysis

Clear oa examples include boat, soap, road. In contrast, broaden contains /oʊ/ spelled with single o; bureau ends with /oʊ/ spelled eau, a French-derived pattern; beautify has /juː/, not a long O. These contrasts clarify that oa is one of several spellings for /oʊ/.

Pitfall Guide

Do not overgeneralize /oʊ/ as oa. Note that oa rarely appears at word endings and must be distinguished from ow, oe, eau, and other variants.