influential

 
Pronunciation: /ˌɪnflʊˈɛnʃ(ə)l/

adjective

  • having great influence on someone or something: her work is influential in feminist psychology

noun

(usually influentials)
  • an influential person: young influentials networks of influentials

Derivatives

influentially

adverb

Origin:

late 16th century (referring to astral influence): from medieval Latin influentia (see influence)