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Confusing Words Quiz

Free resources ยท Word usage

Confusing words.

Affect or effect? Complement or compliment? Four quizzes and over a thousand questions on the word pairs that trip up students and native speakers alike.

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Quick reference

Eight pairs that trip people up.

affect / effect

Affect is usually a verb (to influence). Effect is usually a noun (a result).

complement / compliment

A complement completes something. A compliment is praise. Remember: complement completes.

imply / infer

The speaker implies (suggests). The listener infers (concludes).

principal / principle

A principal is a head or main person, or the main thing. A principle is a rule or belief.

stationary / stationery

Stationary means not moving. Stationery is paper and envelopes: e for envelope.

lose / loose

Lose means to misplace or fail to win. Loose means not tight.

its / itโ€™s

Itโ€™s always means โ€œit isโ€ or โ€œit has.โ€ Its shows possession: the dog wagged its tail.

envelop / envelope

To envelop is to wrap or surround. An envelope holds a letter.

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