-UN Word Family: Word List and Teaching Activities

The -UN word family is the second short U family — and it’s one of the most cheerful clusters in early phonics. Words like sun, fun, run, and bun are warm, positive, and immediately meaningful to young children. If your child has already worked through the -UG family, the short U vowel is already established — now it’s simply a new ending consonant paired with a set of words that are genuinely enjoyable to read and use.

What Is the -UN Word Family?

A word family is a group of words that share the same vowel-consonant ending. The -UN family includes all words ending in -UN, like sun, spun, stun, and shun.

In phonics, the shared ending is the rime and the starting letter or letters are the onset. In run, r is the onset and -un is the rime. When children read the rime as one automatic unit rather than blending three individual sounds, their reading speed increases — and -UN words are particularly satisfying to read quickly because they’re so common in everyday speech and early texts.

Like the -UG family, -UN uses the short U sound — the /u/ in umbrella and under. If your child is coming straight to -UN without having done -UG first, spend a moment on the short U vowel before starting — contrasting it with short A (sun / san) and short O (sun / son) helps children hear the differences clearly.

-UN Word Family Word List

Here’s a sample list of -UN words, grouped from simplest to a little more challenging:

Simple 3-Letter -UN Words

4-Letter and Longer -UN Words

Tip: Sun, fun, and run are the three to lock in first — they’re among the most common words in early readers and children already know and love them. Bun is a great fourth word since it’s concrete and easy to picture.

-UN Words in Simple Sentences

Seeing -UN words in context helps children bridge the gap between recognizing a pattern and reading naturally and fluently. Try these decodable sentences with your child:

1. It was so much fun to run in the sun.
2. She ate a warm bun on the run.
3. The spider spun its web in the warm sun.
4. He was stunned by how fast she could run.
5. The fun had only just begun.
6. They sat in the sun and shared a sticky bun.

Sentence 1 uses three -UN words in one short line — a great challenge and a naturally memorable sentence. Sentence 6 is a lovely closing image that children tend to remember long after the lesson.

How to Teach -UN Word Family Words at Home

Here are four activities that are easy to run and genuinely effective:

1. Onset-Rime Swap

Say /un/ together, then take turns swapping the onset: b-un, f-un, r-un, s-un. Ask “real word or not?” after each swap. Keep it lively — fast swaps build automaticity. Once those four are solid, try adding blends: sp-un, st-un. Children are often surprised and delighted to discover they can read longer words just by applying the same pattern.

2. -UG vs -UN Sort

Mix cards from the -UG family and the -UN family and have your child sort them. Both use short U, so the sort focuses entirely on the ending consonant: /g/ or /n/. Pairs like bug / bun, rug / run, and mug / nun are particularly good for sharpening that final-consonant ear — a skill that matters enormously in accurate spelling.

3. Run in the Sun Game

Write -UN words on cards and spread them across the garden or a room. Call out a word and have your child run to it. Swap roles. The physical running ties the action word to the activity in a memorable way, and children who resist sitting still for reading practice stay engaged much longer when movement is involved.

4. Short U Family Sort

Mix cards from both short U families — -UG and -UN — with a handful of words from short A, E, I, and O families. Ask your child to find all the short U words. This cross-vowel challenge reinforces the short U sound in contrast with the four other short vowels, which is the most important skill for reading CVC words accurately and independently.

Free -UN Word Family Worksheet

Download our free -UN word family worksheet (PDF) — it includes tracing, fill-in-the-blank, and a circle-the-word activity for kindergarten and grade 1. Print and go.

Frequently Asked Questions

What are some -UN word family words for kindergarten?

Great starter -UN words for kindergarteners include bun, fun, run, and sun. These simple three-letter CVC words are easy to decode once a child knows the short U sound and can recognize the -UN pattern at the end of a word.

How do you teach the -UN word family to beginners?

Start by saying the -UN ending out loud together: /un/. Then swap the first sound: b-un, f-un, r-un, s-un. Always begin orally before moving to print. Once children hear the short U sound clearly, reading and spelling -UN words becomes quick and natural.

What is the difference between word families and phonics?

Phonics is the full system of letter-sound relationships. Word families are a teaching shortcut within phonics — they group words by a shared ending like -UN so children can recognize and decode whole chunks quickly rather than sounding out every individual letter.

Keep Exploring

• Letter Sounds — full phonics hub
• -UG Word Family: Word List and Teaching Activities
• -OT Word Family: Word List and Teaching Activities
• -OP Word Family: Word List and Teaching Activities
• -IN Word Family: Word List and Teaching Activities
• Free -UN Word Family Worksheet (PDF)