einflussreich
influential
Having the ability to exert a strong effect or power over people, decisions, or developments.
Sie ist eine der einflussreichsten Politikerinnen des Landes.
She is one of the most influential politicians in the country.

influential
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influential
Having the ability to exert a strong effect or power over people, decisions, or developments.
Sie ist eine der einflussreichsten Politikerinnen des Landes.
She is one of the most influential politicians in the country.

The word is made up of 'Einfluss' (influence) and 'reich' (rich). So it literally means being 'rich in influence'.
Der Unternehmer ist in der Wirtschaft sehr einflussreich.
The entrepreneur is very influential in the economy.
If you want to describe the area of influence more precisely, use the preposition 'auf' followed by the accusative.
Seine Entscheidungen waren einflussreich auf die gesamte Branche.
His decisions were influential for the entire industry.
'Einflussreich' (influential) often describes people or groups with power. Typical combinations are: 'eine einflussreiche Person' (an influential person), 'eine einflussreiche Familie' (an influential family), or 'eine einflussreiche Position' (an influential position).
Er kommt aus einer sehr einflussreichen Familie.
He comes from a very influential family.
powerful / mighty
'mächtig' and 'einflussreich' can both describe that someone has a strong effect on other people or decisions. 'mächtig' sounds stronger and often means that someone has real power and can directly determine what happens. 'einflussreich' means more that someone has a lot of influence, even without officially making the decision themselves. An influential person can strongly help shape opinions, developments, or decisions. For a government, a boss, or an authority, 'mächtig' often fits. For well-known people, experts, or the media, 'einflussreich' is often more precise.

Mehmet kennt eine einflussreiche Journalistin, die oft über Politik schreibt.
Mehmet knows an influential journalist who often writes about politics.
Der mächtige Minister konnte das neue Gesetz stoppen.
The powerful minister was able to stop the new law.