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/ˌk(w)ɛstʃəˈnɛə/ · noun
A form containing a list of questions; a means of gathering information for a survey..
carry out a questionnaire
fill out a questionnaire
In considering their post-war designs some of the British and American railways have adopted the course of taking a cross section of the requirements of the travelling public by distributing questionnaires dealing with details of seating, lighting, catering, and other features making for comfortable journeys.
Use questionnaire when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Questionnaire means A form containing a list of questions; a means of gathering information for a survey..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
carry out a questionnaire
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