2nd Grade · Core Spelling
OU and OW Words
Words with the OU and OW diphthong — the gliding vowel sound heard in out, round, cow, and down.
These spelling words are a good fit for students who...
- recognize familiar vowel teams, including long-o ow in “snow”
- can hear the shared vowel sound in “out” and “cow”
- notice that “out” and “cow” share the same vowel sound even though they’re spelled differently
Word list
The 12 words to practice in this step
2nd Grade · Core Spelling
- brown
- cow
- down
- found
- ground
- loud
- mouse
- mouth
- now
- out
- round
- sound
12 words
Spelling Skill
OU and OW Words
Learn how this spelling pattern works, see examples, common mistakes, and teaching guidance.
Explore the OU and OW skill →Why these words — and what they teach
The sound in out and cow has two common spellings. Because position does not always settle the choice, children need a small store of familiar examples.
The list pairs common ou words such as out, sound, and ground with ow words such as cow, now, and brown. Children learn that ow can occur at the end or inside a word and can represent a different sound than it does in snow. The linked Skill page explores the pattern more fully.
How to practice this list
Sort the words by ou and ow, read each group, and then dictate them in mixed order. Ask your child to name a known word with the same spelling before checking an uncertain answer.
Likely attempts include swapping ou and ow or using the long-o sound when reading ow. Confirm what the child heard, compare the word with out or cow, and have them change only the vowel team.
Move on when your child spells the list in mixed order, keeps both vowel letters, and uses a familiar word to repair an occasional ou/ow choice.
Common questions
Frequently asked questions
- What sound do OU and OW make in this list?
- They make the diphthong heard in 'out' and 'cow.' The sound glides, so students should listen for the whole vowel movement rather than a short or long vowel.
- Is there a rule for choosing OU or OW?
- There is no rule as dependable as AI/AY or OI/OY. OW often appears at the end, but both spellings can appear in the middle of words, so common examples need repeated practice.
- How is this OW different from the OW in 'snow'?
- The same letters can spell different sounds. In 'snow,' OW spells long O; in 'cow' and 'down,' OW spells the OU/OW diphthong.
- What comes after OU/OW in the 2nd Grade sequence?
- The Two Sounds of oo, another vowel team that does not follow a simple position rule. OU/OW gives students practice noticing that one team can spell one sound two different ways before oo teaches that one spelling can make two different sounds.