The Oxford Thesaurus An A-Z Dictionary of Synonyms - sea n.

1) ocean, deep blue sea, high seas, Literary (briny) deep, (bounding) main, Neptune's or Poseidon's kingdom or domain, Nautical blue water, Davy Jones's locker, Colloq briny, drink, pond (= 'Atlantic Ocean') : For years he sailed the seas in search of adventure. 2) swell, breaker, wave: As the wind increased, huge seas began to wash over the boat. 3) plethora, quantity, abundance, surfeit, profusion, flood, multitude, spate, legion, mass, Colloq lot(s) , heap(s) , pile(s) , ton(s) , mountain(s) , load(s) , oodles, gobs, scads: Hamlet's sea of troubles was nothing compared to mine if this book isn't completed soon! 4 (all) at sea. confused, disoriented, at sixes and sevens, bewildered, perplexed, baffled, mystified, lost, adrift: They were clearly not expecting her and were completely at sea as to what to do.