Usage Note
Insensé describes something utterly irrational or a person who acts madly: une idée insensée is a crazy idea. The feminine form is insensée. It is slightly literary; the more colloquial equivalents are fou or dingue. Note the accent: insensé, not insense.
Examples
"C'est un projet complètement insensé."
Natural Translation
It's a completely senseless project.

Free starter pack
Building your French vocabulary?
Get the 100 most common French words as a free PDF — one email, no spam.
Related Words
Explore French by topic