Choosing the Right Word

The ACT loves to test your ability to pick the word that fits best. Sometimes, words sound similar but have very different meanings—don't get tricked!

Commonly Confused Words

• Affect vs. Effect
• Their vs. There vs. They're
• Then vs. Than

Idioms and Prepositions

Certain expressions use specific prepositions—these are called idioms. For example: "interested in" not "interested on".

Clarity and Conciseness

Always choose words that make your meaning clear, and avoid unnecessary ones.

Real-World Relevance

Using the right word can make your writing and speaking more accurate and impressive—essential for school, work, and daily life.