
sponsern
to sponsor
To support a person, event, or organization financially or materially, usually in exchange for advertising.
Die örtliche Bank sponsert das Trikot unserer Fußballmannschaft.
The local bank sponsors our soccer team's jersey.
to sponsor
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to sponsor
To support a person, event, or organization financially or materially, usually in exchange for advertising.
Die örtliche Bank sponsert das Trikot unserer Fußballmannschaft.
The local bank sponsors our soccer team's jersey.
'Sponsern' (to sponsor) is a loanword from English ('to sponsor'). It was adopted into German and is conjugated like a regular German verb.
Viele große Firmen sponsern kulturelle Veranstaltungen.
Many large companies sponsor cultural events.
The verb 'sponsern' (to sponsor) always needs a subject (who is sponsoring?) and an accusative object (what or whom is the person/company sponsoring?). So the structure is: sponsor (subject) + sponsert + sponsored item/person (accusative object).
Ein bekannter Sportartikelhersteller sponsert den Marathon.
A well-known sporting goods manufacturer sponsors the marathon.
Sports clubs, teams, jerseys, or cultural events such as concerts and festivals are often sponsored. The sponsors are usually companies.
Unsere Schule sucht eine Firma, die das Sommerfest sponsert.
Our school is looking for a company to sponsor the summer festival.
to support
Unterstützen generally means helping a club financially, materially, or practically. Sponsern also refers to financial or material help, but usually implies advertising in return. Without a commercial advertising purpose, unterstützen is more appropriate; when advertising has been agreed on, sponsern is more precise.

Eine Firma sponsert den Sportverein mit neuen Trikots und erhält dafür Werbung im Stadion.
A company sponsors the sports club with new jerseys and receives advertising in the stadium in return.
Eine Familie unterstützt den Sportverein mit einer Spende, ohne dafür Werbung zu verlangen.
A family supports the sports club with a donation without asking for advertising in return.