Words / B2

uh-SURSHUN/əˈsɜːʃn/

An assertion is a firm statement that something is true, often without proof yet: an assertion that the figures were wrong. Claim is the everyday cousin; statement is weaker and more neutral. Assert is the verb (assert that…). In academic writing, an assertion needs evidence. In speech, a claim or she said firmly is enough. Do not confuse it with insertion (putting something in).

Meaning

A firm statement that something is true.

Examples

• “His assertion was not supported by evidence.”
• “His assertion was not supported by the survey data.”
• “Make fewer assertions and more arguments with examples.”

Good to know

A firm claim. Verb: assert that. Everyday: claim. Academic: needs evidence. Not insertion.

Near in meaning

claim

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