nonattitude means A belief made up ad hoc by someone who does not actually have an opinion on the subject. Lexicurio rates it Sui generis — a strength score of 91 out of 100.
Etymology
From non- + attitude.
noun
- A belief made up ad hoc by someone who does not actually have an opinion on the subject.“A major problem with polling is that people often give nonattitudes when asked about their political preferences.”