Portuguese Etymology From aventura (“adventure”) + -oso. Pronunciation (Brazil) IPA(key): /a.vẽ.tuˈɾo.zu/ (Brazil) IPA(key): /a.vẽ.tuˈɾo.zu/ (Southern Brazil) IPA(key): /a.vẽ.tuˈɾo.zo/ (Portugal) IPA(key): /ɐ.vẽ.tuˈɾo.zu/ (Portugal) IPA(key): /ɐ.vẽ.tuˈɾo.zu/ (Northern Portugal) IPA(key): /ɐ.bẽ.tuˈɾo.zu/ [ɐ.βẽ.tuˈɾo.zu] Hyphenation: a‧ven‧tu‧ro‧so Adjective aventuroso (feminine aventurosa, masculine plural aventurosos, feminine plural aventurosas, metaphonic) adventurous (involving adventure)Wikiwand - on Seamless Wikipedia browsing. On steroids.