A nonsensical idea is an idea that makes no sense or is illogical. It is something that goes against common sense and reason, and is often considered absurd or ridiculous.
Sentences with «nonsensical idea»
But the Conservatives claimed that «Corbyn's nonsensical ideas simply don't add up». (totalpolitics.com)
Tibby had nonsensical ideas about what people did in South Carolina, but Carmen knew not to argue with her. (bookbrowse.com)
His specialty is taking a tiny, almost nonsensical idea and turning it into a cultural phenomenon. (inc.com)