noun
a written or online set of questions used to collect information from people
Please complete the questionnaire before your appointment.
The online questionnaire asks about your shopping habits.
Good to know
A questionnaire usually means the form with the questions. A survey can also mean the whole process of collecting answers.
Common phrases & grammar
complete a questionnaire · fill out a questionnaire · online questionnaire · questionnaire responses
a questionnaire about [topic]
a questionnaire for [group]