- on the ocean.
- perplexed; uncertain: completely at sea as to how to answer the question.
- to set out on a voyage.
- to embark on a nautical career.
Origin of sea
British Dictionary definitions for at sea
- the sea the mass of salt water on the earth's surface as differentiated from the landRelated adjectives: marine, maritime, thalassic
- (as modifier)sea air
- one of the smaller areas of oceanthe Irish Sea
- a large inland area of waterthe Caspian Sea
- on the ocean
- in a state of confusion
Word Origin for sea
Science definitions for at sea
Idioms and Phrases with at sea (1 of 2)
Aboard a ship, on the ocean, as in Within a few hours the ship would be out at sea. During World War II a famous American newscaster addressed his radio broadcasts to listeners everywhere, including “all the ships at sea.” [1300s]
Also, all at sea. Perplexed, bewildered, as in She was all at sea in these new surroundings. This idiom transfers the condition of a vessel that has lost its bearings to the human mind. Charles Dickens used it in Little Dorrit (1855): “Mrs. Tickit ... was so plainly at sea on this part of the case.” [Second half of 1700s]
Idioms and Phrases with at sea (2 of 2)
In addition to the idiom beginning with sea
- sea legs
- seal of approval
- seal off
- seal one's fate
- at sea
- between a rock and a hard place (devil and the deep blue sea)
- high seas
- not the only fish in the sea
- put out (to sea)