襲う

The core image of this verb is a sudden, overwhelming force that strikes without warning. It is not limited to physical violence but extends to natural disasters and internal psychological states. The common thread across all meanings is the element of surprise and the feeling of being powerless against the incoming force.

When used for physical attacks, it implies a predatory or aggressive ambush. Unlike the more general "kougeki suru" (to attack), which can describe a planned military strategy or a sports play, "osou" emphasizes the suddenness and the shock of the assault.

In the context of disasters or emotions, it describes a state where a person or place is suddenly engulfed by something negative or uncontrollable. For example, when a sudden wave of regret (koukai) or a severe cold snap (kanpa) strikes, the subject is portrayed as a victim of an external or internal force that they cannot avoid or stop.