Upottua
Upottua is a Finnish verb meaning to become submerged or to sink below the surface. It can describe physical sinking in water, such as a boat or object submerging, or more generally the act of going under a surface. In a broader sense, upottua can also refer to becoming overwhelmed or deeply absorbed, for example with respect to attention, energy, or emotion.
The active counterpart is upottaa, meaning to sink something or to bury by submerging. This form is
Usage notes: Upottua is common in everyday Finnish and in reporting about accidents, disasters, or natural phenomena.