Definition of «lengthy questionnaire»

The phrase "lengthy questionnaire" means a questionnaire or survey that has a lot of questions and takes a long time to complete.

Guests fill out lengthy questionnaires before arrival, so your fridge and pantry can be stocked with requested groceries. (travelandleisure.com)
There is no need to fill out lengthy questionnaires for each insurer. (netquote.com)
In certified milk banks, donors are thoroughly screened and given lengthy questionnaires. (articles.chicagotribune.com)
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