Half-seas over is a phrase used to describe someone who is slightly drunk. It is derived from the nautical term 'half-seas over, ' which refers to a ship that has been rocked by waves and is listing to one side. The crossword solutions for this phrase are OILED (5 letters), LIT (3 letters), HIGH (4 letters), and TIPSY (5 letters). OILED refers to having consumed alcohol, LIT is a slang term for being drunk, HIGH is another slang term for being drunk, and TIPSY is a term for being slightly drunk.