the act, power, or capacity of causing or producing an effect on somebody or something, esp in indirect or intangible ways, or the effect itself
the power to achieve something desired by using wealth or position
somebody or something that has or exerts influence, esp in matters of morality and behaviour
an ethereal fluid supposed to flow from the stars and to affect the actions of human beings
under the influence
informal affected by alcohol; drunk
She was arrested for driving under the influence
[Middle English via French from medieval Latin influentia, from Latin influent-, influens, present part. of influere to flow in, from in-2 + fluere to flow]