Decoding Two-Syllable Words: Prefixes & Suffixes

Free sample questions, a clear explanation, and 5 practice skills with an AI tutor that guides without giving the answer away.

Super Word Builders: Prefixes & Suffixes!

Hi there, Word Detective! Did you know that you can be a word builder? It’s just like using LEGOs! You start with a main block, and then you add special pieces to the beginning or end to change your creation. In reading, our main block is called a base word. The special pieces we add are called prefixes and suffixes. Let's build some words!

Power-Up with Prefixes!

A prefix is a small word part that we add to the beginning of a base word. It changes the word's meaning! Think of it as a "before" part.

un-
means "not".
Example: unhappy means not happy.
re-
means "again".
Example: redo means to do again.
pre-
means "before".
Example: preview means to view before.

Supercharge with Suffixes!

A suffix is a word part that we add to the end of a base word. It's an "after" part! It can change the word's meaning or tell us *when* it happened or *how many* there are.

-ing
means "happening now". (running)
-ed
means "in the past". (played)
-s
means "more than one". (cats)
-er / -est
compares things. (taller, tallest)

⭐ Key Takeaway! ⭐

Look for small parts at the beginning (prefixes) and end (suffixes) of longer words. They are clues to help you read the whole word!

Let's Be Word Builders!

Let's use the base word "lock". See how many new words we can build!

Add a prefix: unlock. "I will use my key to unlock the door." (This means to *not* have it locked anymore!)

Add a suffix: locking. "She is locking the gate now." (This means it's happening right now!)

Add another suffix: locked. "He locked the chest yesterday." (This means it already happened!)

You're doing an amazing job! Keep spotting those prefixes and suffixes to become a reading superstar!

Sample questions

1. If you are 'unhappy', how do you feel?

○ A. very happy

○ B. happy again

○ C. happy before

✓ D. not happy

Answer: D. not happy — The prefix 'un-' means 'not'.

2. When you 'reread' a book, what do you do?

✓ A. read it again

○ B. read it for the first time

○ C. read it fast

○ D. not read it

Answer: A. read it again — The prefix 're-' means 'again'.

3. What does it mean to 'preheat' the oven?

○ A. heat it again

✓ B. heat it before

○ C. not heat it

○ D. heat it quickly

Answer: B. heat it before — The prefix 'pre-' means 'before'.

Skills in this topic

Identify common prefixes (e.g., un-, re-, pre-) and understand how they change a word's meaning.
Decode words with common prefixes (e.g., 'unhappy', 'redo', 'preview').
Identify common suffixes (e.g., -ing, -ed, -s, -er, -est) and understand how they change a word's meaning or tense.
Decode words with common suffixes (e.g., 'running', 'played', 'cats', 'taller', 'tallest').
Given a base word, add different prefixes and suffixes to create new words, explaining how each addition changes the word's meaning and using the new words in sentences.

Practice 50+ questions on this topic

Unlimited interactive practice, progress tracking, and Nova — your AI tutor. Free to start.

Start learning free →