nonresponder.
A person who does not respond.
Meaning & usage
A person who does not respond.
The court sent "requests to show cause" to all questionnaire non-responders.
A person who does not show an immune response to a virus after being vaccinated against it; someone who does not react normally to a drug.
A vaccine non-responder is a person who does not develop protective surface antibodies after completing two full series of injections.
Where this word comes from
Etymology tree English non- English respond Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English responder English nonresponder From non- + responder.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.