Caliber is a noun with two main meanings. It can describe a person’s or thing’s level of qualityhow good something is compared with others or ability, or it can refer to the diameterthe distance across a circular object through its center of a gun barrelthe long metal part of a gun through which a bullet travels or tube.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-19. AI assessment; not a guarantee of accuracy.
Pronunciation
AI-generated pronunciation audio (OpenAI).
Accent: General American English
IPA: /ˈkælɪbər/
Easy pronunciation: KAL-ih-ber (approximate spelling).
Stress: Stress the first syllable.
Primary sense: a degree or grade of excellence or worth.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-19. AI assessment; not a guarantee of accuracy.
Caliber Meaning
how good or capable someone or something is
Part of speech: noun
Definition: a degree or grade of excellence or worth
Example: They want employees of the highest caliber.
Synonyms for this meaning:
- quality — Works well when caliber means level of excellence or ability.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-19. AI assessment; not a guarantee of accuracy.
Other Meanings of Caliber
Meaning 2
the width of the inside of a gun barrel or tube
Part of speech: noun
Definition: diameter of a tube or gun barrel
Example: The rifle is chambered for a small-caliber round.
Synonyms for this meaning:
- bore — A direct technical match for the internal diameter of a barrel or tube.
- gauge — Used in related technical contexts, especially for firearms, though not always interchangeable with caliber.
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-19. AI assessment; not a guarantee of accuracy.
Caliber Synonyms
Similar Meaning
- quality
diameter of a tube or gun barrel
- bore
- gauge
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-19. AI assessment; not a guarantee of accuracy.
Common Mistakes
- People sometimes confuse caliber with calibre; calibre is the British spelling of the same word.
- Do not use caliber to mean general size in every context; in technical use it refers specifically to barrel or tube diameter.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-19. AI assessment; not a guarantee of accuracy.
Frequently Asked Questions
What does caliber mean?
Caliber usually means either the level of excellence or ability of someone or something, or the diameter of a gun barrel or tube.
What are the synonyms of caliber?
For the ‘quality or ability’ sense, a close synonym is quality. For the technical sense, bore and sometimes gauge can fit.
Is caliber the same as calibre?
Yes. Caliber is the American spelling, and calibre is the British spelling.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-19. AI assessment; not a guarantee of accuracy.
