Diphthong OY/OI at a glance:
- Words with oi sound include oil, coin, voice
- Words with oy sound include boy, royal, enjoy
Spelling Frequencies:
- oi - 66%
- oy - 34%
Rare Spelling Patterns:
- uoy (buoy)
Common Spelling Generalisations or Patterns:
- English words do not end in ‘i’
- oi typically occurs in the middle and sometimes at the beginning of a word e.g. oil, oink, boil, coin
- oy typically occurs at the end of a syllable or word e.g. toy, boy, employ, joyful, oyster