Blitzkrieg is a German word used to describe a military tactic characterized by a swift and overwhelming attack with the intent of taking the enemy by surprise. Antonyms for the word blitzkrieg could include slow, gradual, deliberate or cautious. These words describe an approach that is the opposite of the surprise attack tactic implied by the term blitzkrieg. Slow and gradual approaches may be more methodical, careful and take longer to execute. A deliberate approach may be more strategic and planned out, while a cautious approach may involve more consideration for potential risks and costs involved. These antonyms provide a contrast to the fast, aggressive, and conquest-oriented connotations of the term blitzkrieg.