大错特错

Explanation: Completely wrong. 　　Usage: Joint type; as the predicate attribute; that completely wrong 　　Source: Qing Zeng Pu, "Flower" 25 back: "Now think about it, really wrong!" 　　Examples: Now we are into the prison is 'Te-jen', that is ~! ★ Brief Introduction to the "experience" Fifty Thesaurus:  be absurd; be entirely wrong, the height of folly, Gave birth to jump without, fantastic, Baloney Without, weird and uncanny