Synonyms of underwater in English:

underwater

adjective

  • 1 an underwater laboratory
    submerged, immersed, sunken, subaqueous, subsurface; undersea, subsea, submarine
  • Definition of underwater in:

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    Word of the day internecine
    Pronunciation: ˌɪntəˈniːsʌɪn
    adjective
    destructive to both sides in a conflict