- 1[transitive, intransitive] reason (that…) + speech to form a judgment about a situation by considering the facts and using your power to think in a logical way She reasoned that she must have left her bag on the train. They couldn't fire him, he reasoned. He was the only one who knew how the system worked.
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- 2[intransitive] to use your power to think and understand the human ability to reason Phrasal Verbsreason outreason with
reason
verbNAmE//ˈrizn//
Verb Forms present simple I / you / we / they reason he / she / it reasons
past simple reasoned
-ing form reasoning
Check pronunciation: reason