submerge
submerge
/səbˈmɜːdʒ/
1 intransitive, transitive to go under the surface of water or liquid; to put something or make something go under the surface of water or liquid The submarine had had time to submerge before the warship could approach.
be submerged (by something) The fields had been submerged by floodwater.
Her submerged car was discovered in the river by police divers.
submerge something/yourself Hippopotamuses cool down by submerging themselves in water.
2 transitive submerge something to hide ideas, feelings, opinions, etc. completely Doubts that had been submerged in her mind suddenly resurfaced.
Word Origin
early 17th cent.: from Latin submergere, from sub- ‘under’ + mergere ‘to dip’.