at sea Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition phrase. 1 on the ocean; 2 perplexed; uncertain Example Sentence The ship was at sea. OR He was at sea as to how to answer the question. Synonyms on the ocean; baffled; perplexed; confused Antonyms on land; clear Hear It! Say It! Write It! at sea Switch to cursive Start Share with your friends: