Adjective oversea has 1 sense
  1. oversea, overseas - being or passing over or across the sea; "some overseas trade in grain arose"
    Antonym: air (indirect, via land, sea)
    Antonym: land (indirect, via sea, air)
,Adverbial oversea has 1 sense
  1. oversea, overseas - beyond or across the sea; "He lived overseas for many years"
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