intransitive. To become submerged in water; to go under or to the bottom of the sea, a lake, etc.; (of a ship) to founder. Also in figurative context.

intransitive. To sink in water; to be drowned. Obsolete.

intransitive. To suffer submersion or drowning.

intransitive. Of a boat or other vessel, or those on board: to sink. Also figurative.

To plunge again or once more (in various senses). Frequently with into. intransitive.

intransitive. To sink or plunge under the surface of water or other liquid; to undergo submersion.

intransitive. in passive sense: To be swamped or submerged; to fill with water and sink, as a boat. Also figurative.

intransitive. To go underwater, to submerge. Also: (of a boat, etc.) to sink; (of a person or animal) to drown.