Synonyms for Seas:

n.

oceans (noun)
oceans, Mains, deeps, brines.

Usage examples for seas

  1. Their service does not compel them to aid you beyond the seas – Harold, Book 10. The Last Of The Saxon Kings by Edward Bulwer-Lytton
  2. Then great fear came into the hearts of the people, for the fierce Datto was the terror of the eastern seas and all the southern islands were reported captured. – Philippine Folklore Stories by John Maurice Miller
  3. Even of the humblest shell- fish, the Brachiopods, no new species common to the Cretaceous and recent seas has yet been met with. – The Student's Elements of Geology by Sir Charles Lyell