From Longman Dictionary of Contemporary Englishpowerfulpow‧er‧ful /ˈpaʊəfəl $ ˈpaʊr-/ ●●●S3W2 adjective 🔊 🔊 1importantPOWER a powerful person, organization, group etc is able to control and influence events and other people’s actions → powerless 🔊 He was one of the most powerful men in Bohemia. 🔊 a very influential and powerful family 🔊 rich and powerful nations2speech/film etcSTRONG FEELING OR BELIEF having a strong effect on someone’s feelings or opinions 🔊 a powerful speechpowerful reasons/arguments (=reasons that make you think that something must be true) 🔊 Good teamwork is a powerful tool (=very effective method) for effective management.3feeling/effect a powerful feeling or effect is very strong or great 🔊 Immigrants have had a powerful influence on the local culture. 🔊 a powerful sense of tradition4machine/weapon etcEFFECTIVE a powerful machine, engine, weapon etc is very effective and can do a lot 🔊 a new generation of more powerful PCs 🔊 a machine that is immensely powerful 🔊 a powerful 24-valve engine 🔊 a powerful telescope5physically strongSTRONG FEELING OR BELIEF physically strong 🔊 Jed was a powerful, well-built man. 🔊 The females are smaller and less powerful than the males.► see thesaurus at strong6a lot of force a powerful blow, explosion etc has a lot of force 🔊 an explosion ten times more powerful than the Hiroshima bomb 🔊 a powerful right-foot shot on goal 🔊 winds powerful enough to uproot trees7medicineMDEFFECT/INFLUENCE a powerful medicine or drug has a very strong effect on your body8team/army etcBEAT/DEFEAT a powerful team, army etc is very strong and can easily defeat other teams or armies 🔊 a powerful fighting force9qualitySTRONG TASTE OR SMELL very strong, bright, loud etc 🔊 a powerful singing voice 🔊 the powerful headlights —powerfully adverb 🔊 Christie is very powerfully built. →all-powerfulTHESAURUSpowerful a powerful person, organization, group etc is able to control and influence events and other people’s actionsthe world’s most powerful nationParliament had become more powerful than the King.a powerful political familyinfluential having a lot of power to influence what happens, because people pay attention to what you saya highly influential fashion designerHe’s one of the most influential figures in international politics.strong powerful – used about people or groups in politics who have a lot of supportersThe communists were particularly strong in the big industrial cities.He is a strong voice in the state assembly.dominant more powerful than other people, groups, countries etcShe was the dominant force in women’s tennis for many years.The company has a dominant position in the market.