What does conviction mean?
Conviction is a noun with two distinct but related senses. Its primary meaning is a firm, deeply held belief or opinion — the kind of settled certainty that shapes character and guides action, as in 'her conviction that education changes lives'. The word also has a precise legal meaning: the formal judgment by a court that a person is guilty of a crime, as in 'a conviction for burglary'. Both senses derive from the idea of something being proven or fixed in the mind. When used about beliefs, conviction connotes strength, sincerity, and moral seriousness; describing someone as speaking 'with conviction' praises their persuasiveness and earnestness. In legal usage it is neutral and technical, standing opposite acquittal. The word is versatile across registers, appearing in moral and political discourse, in journalism about court cases, and in everyday conversation about what people truly believe.
nounA firmly held belief or opinion, or the formal declaration by a court that someone is guilty of a criminal offence.
- A firmly held belief or opinion, often held with confidence and certainty.
- A formal declaration by a court of law that a person is guilty of a criminal offence.
"She spoke with such conviction that no one dared to disagree."
"He argued his case with deep conviction, refusing to back down."
"She has a prior conviction for theft dating back to 2015."
The plural is common for multiple beliefs (e.g., 'political convictions') or multiple guilty verdicts (e.g., 'three prior convictions').
"Her religious convictions guided every decision she made."
The same word can describe the belief that sends someone to fight for a cause — and the verdict that sends them to prison.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of conviction
Conviction comes from the Latin verb convincere, meaning 'to overcome, prove, or refute', formed from com- ('together') and vincere ('to conquer'). It entered English in the late Middle Ages via Anglo-Norman and Old French, initially carrying legal senses relating to proof and condemnation before broadening to mean a firmly established belief. It shares its Latin root with convince, convict, evict, and invincible.
How conviction is actually used
In everyday speech, 'conviction' most often refers to a strong personal belief and carries positive connotations of integrity and resolve. In legal contexts it is neutral and formal. The phrase 'with conviction' is common when describing speech or performance delivered with force and sincerity.
Easily confused with conviction
A convention is an established custom or agreement, whereas a conviction is a firm belief or a guilty verdict.
Contrition means remorse for wrongdoing, while conviction is either a firm belief or a finding of guilt.