Answer:

submerge

Answer	Crossword Clue
SUBMERGE	Go under
SUBMERGE	Cover with water
SUBMERGE	Overwhelm.

SUBMERGE	Plunge.
SUBMERGE	Inundate.
SUBMERGE	Go down, as the Seawolf.
SUBMERGE	Command aboard the Nautilus.
SUBMERGE	Suppress.
SUBMERGE	Sink.
SUBMERGE	Put under water

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.