Out-flanking is a military term that refers to the maneuver of moving around the side of an opponent's line, thus gaining a tactical advantage. The antonyms, or opposite words, to out-flanking would be frontal assault, head-on attack, and direct confrontation. These terms mean to attack an opponent straight on, rather than maneuvering around them. While out-flanking is often used to surprise and overcome an opponent, frontal assaults can be necessary when facing a well-defended position. In overall strategy, both out-flanking and frontal assault have their place, depending on the situation, resources, and objectives of the military operation.