underwater

adjective, adverb

/ˌʌn.dəˈwɔː.tər/

/-dɚˈwɑː.t̬ɚ/

Definition

B2 under the surface of the water, especially under the surface of the sea: an underwater camera (= a camera that you can use underwater) Some species of turtle can remain underwater for 24 hours.Seas and oceans

(Definition of underwater adjectiveadverb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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Synonyms and related words:

to express disagreement or refuse to do something

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