UK forces have been in Afghanistan since US-led forces launched Operation Enduring Freedom in 2001, targeting al-Qaeda and its Taliban supporters.
5. Weak in intellect; destitute of ordinary strength of mind; foolish; witless; simple; as, a silly woman. 6. Proceeding from want of understanding or common judgment; characterized by weakness or folly; unwise; absurd; stupid; as, silly conduct; a silly question.
crazy - foolish; totally unsound; a crazy scheme; half-baked ideas; a screwball proposal without a prayer of working half-baked, screwball, softheaded colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech