ROGET THESAURUS
cotidal
Ocean
N
sea, ocean, main, deep, brine, salt water, waves, billows, high seas, offing, great waters, watery waste, vasty deep, wave, tide, hydrography, hydrographer, Neptune, Poseidon, Thetis, Triton, Naiad, Nereid, sea nymph, Siren, trident, dolphin, oceanic, marine, maritime, pelagic, pelagian, seagoing, hydrographic, bathybic,
cotidal, at sea, on sea, afloat.