Which of the following is INCORRECTLY spelled.

Questionaire

The incorrectly spelled word is Questionaire. The correct spelling is Questionnaire.

The other words are spelled correctly.

• Questionnaire is a list of questions used to gather information from people.
• Install means to put something in place or set it up.
• Comprehensive means covering a wide range of topics or aspects.
• Comrade is a fellow worker or companion.