Fun with Words: Root Words & Affixes
A kindergarten worksheet introducing basic morphology concepts: identifying root words and understanding how prefixes and suffixes change word meaning.
Includes
Standards
Topics
Fun with Words: Root Words & Affixes
Name:
Date:
Score:
Read each question carefully and do your best!
What is a root word?
A root word is the main part of a word. It cannot be broken down into smaller words. Think of it like the root of a tree!

Circle the root word in each sentence.
1. I can see the beautiful er. (flower)
2. Let's play outside. (re)
3. My dog is un happy. (un)
Match the affix to what it means.
1. un-
a. again
2. re-
b. not
3. -ing
c. happening now
1. What word means 'to play again'?
playful
replay
playing
played
2. Which word means 'not happy'?
happiness
happily
unhappy
happy
What is one word you know that has 'un-' at the beginning? What does it mean?