Word parts under- + water Pronunciation (UK) IPA (key): /ʌndə(r)ˈwɔːtə/ (US) enPR: ŭndərwôʹtər, IPA (key): /ʌndɚˈˈwɔtər/ Adjective Positive underwater Comparative none Superlative none If something is underwater, it is located beneath the surface of a waterbody. Related words under waterWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads