Words / C1

BOHLST-uh/ˈbəʊlstə/

To bolster is to prop something up so it is stronger: bolster confidence, bolster an argument, bolster the case. Strengthen is the general verb; support can be merely moral. Bolster suggests a boost that was needed, not a foundation from scratch (that is underpin). It is common in journalism and essays; in speech, boost or back up is plainer.

Meaning

To support or strengthen something, such as confidence or an argument.

Examples

• “Extra practice bolstered her speaking.”
• “Fresh data bolstered the original claim.”
• “A short win can bolster a team that has been sliding.”

Good to know

bolster confidence/an argument. Boost that was needed. Everyday: boost / back up. Contrast: underpin = basis.

Near in meaning

boost

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