Synonyms: influential
Definition: having or exercising influence or power
Usage: an influential newspaper; influential leadership for peace
Similar words: important, authoritative
Definition: having authority or ascendancy or influence
Usage: an important official; the captain's authoritative manner
Similar words: powerful, potent
Definition: having great influence
Similar words: prestigious
Definition: exerting influence by reason of high status or prestige
Usage: a prestigious professor at a prestigious university