📖 Introduction
Have you ever wondered why the words happy, unhappy and happiness look similar but have different meanings?
Many English words are built from smaller word parts. By learning these parts, you can understand the meanings of many unfamiliar words without using a dictionary.
In this lesson, you’ll discover how prefixes, suffixes and root words work together to build new words and expand your vocabulary.
🎯 What You’ll Learn
By the end of this lesson, you should be able to:
- explain the meaning of prefixes, suffixes and root words.
- identify common prefixes and suffixes.
- determine how prefixes and suffixes change word meanings.
- use word parts to understand unfamiliar vocabulary.
💡 Let’s Explore
What Is a Root Word?
A root word is the basic word that carries the main meaning.
New words can be formed by adding a prefix, a suffix or both.
Examples
| Root Word | Meaning |
|---|---|
| happy | feeling joy |
| play | to take part in a game or activity |
| write | to form words using letters |
| care | showing concern for others |
What Is a Prefix?
A prefix is a group of letters added to the beginning of a root word.
A prefix changes the meaning of the word.
Common Prefixes
| Prefix | Meaning | Example |
|---|---|---|
| un- | not | unhappy |
| re- | again | rewrite |
| dis- | opposite of / not | disagree |
| pre- | before | preview |
| mis- | wrongly | misunderstand |
Examples
- happy → unhappy
- write → rewrite
- agree → disagree
Notice that the root word stays the same, but the meaning changes.
What Is a Suffix?
A suffix is a group of letters added to the end of a root word.
A suffix may change the word’s meaning or its part of speech.
Common Suffixes
| Suffix | Example |
|---|---|
| -er | teacher |
| -ful | helpful |
| -less | fearless |
| -ness | kindness |
| -ly | quickly |
Examples
- help → helpful
- kind → kindness
- quick → quickly
🌟 Example
Look at the word:
carelessly
We can divide it into:
- care → root word
- -less → without
- -ly → describes how something is done
So, carelessly means doing something without being careful.
🌍 Real-Life Example
Olivia was reading a science article and came across the word reusable.
She recognised:
- re- means again.
- use is the root word.
- -able means can be.
She understood that reusable means something that can be used again.
Knowing word parts helped her understand the new word without asking for help.
💡 Why Learn Prefixes and Suffixes?
Learning word parts helps you:
✔ understand unfamiliar words.
✔ improve your spelling.
✔ build a larger vocabulary.
✔ become a more confident reader.
✔ write more accurately.
✨ Quick Tips
🔤 A prefix comes before the root word.
📝 A suffix comes after the root word.
📚 The root word gives the basic meaning.
🌟 Learning word parts helps you unlock thousands of new words.
🎯 Let’s Practise!
A. Choose the Correct Answer
1. What is a root word?
A. A group of letters added to the beginning of a word.
B. A word used only in dictionaries.
C. The basic word that carries the main meaning.
D. A group of letters added to the end of a word.
2. Which word contains the prefix re-?
A. Careful
B. Rewrite
C. Kindness
D. Teacher
3. Which suffix changes kind into a noun?
A. -ly
B. -er
C. -ful
D. -ness
B. True or False
4. A prefix is added to the beginning of a word.
5. The suffix -less often means “without.”
C. Short Answer
6. Explain the difference between a prefix, a suffix and a root word.
7. Write one new word using each of these prefixes:
- un-
- pre-
- mis-
8. Break each word into its parts and explain its meaning.
- unkind
- careful
- preview
Answers: 1 C 2 B 3 D 4 T 5 T