at sea Definition

sea
noun seas

1. The large expanse of salt water covering the greater part of the Earth's surface.

Form: the sea (usually)
2. Any great expanse of water.
3. Any geographical division of this, eg the Mediterranean Sea.
4. An area of this with reference to its calmness or turbulence.

Example: choppy seas


Example: sea breeze
6. A large inland saltwater lake, eg the Dead Sea.
7. Anything similar to the sea in its seemingly limitless mass or expanse.

Example: a sea of paperwork
8. A vast expanse or crowd.

Example: a sea of worshippers

Idiom: all at sea

Completely disorganized or at a loss.

Idiom: at sea

Away from land; in a ship on the sea or ocean.

Completely disorganized or bewildered.

Idiom: go to sea

To become a sailor.

Idiom: put to sea (put out to sea)

To start a journey by sea.

Etymology: Anglo-Saxon sæ.