useful / helpful
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useful / helpful
To be useful, helpful, or beneficial for a particular purpose. The word is often used in a more formal register.
Regelmäßige Bewegung ist der Gesundheit sehr dienlich.
Regular exercise is very beneficial to health.
'Dienlich' (useful/helpful) is derived directly from the verb 'dienen' (to serve). Something that is 'dienlich' 'dient' (serves) a particular purpose or goal and helps achieve it.
Ein guter Plan dient dem Erfolg des Projekts.
A good plan serves the success of the project.
The adjective 'dienlich' (useful/helpful) belongs to elevated or formal written language. It is used only rarely in everyday conversation.
Für weitere Informationen sind die beigefügten Dokumente sicherlich dienlich.
For further information, the attached documents will certainly be useful.
'Dienlich' (useful/helpful) is very often used with a dative object to express to whom or what something is useful. The structure is: something (nominative) is useful/helpful to a thing/person (dative).
Diese Erfahrung wird Ihnen für Ihre zukünftige Karriere dienlich sein.
This experience will be useful to you for your future career.
'Dienlich' (useful/helpful) is often used with abstract nouns to express a benefit. Typical formulations are 'der Gesundheit dienlich sein' (to be beneficial to health), 'dem Verständnis dienlich sein' (to be helpful for understanding), or 'der Sache dienlich sein' (to be useful to the cause).
Eine klare Zusammenfassung ist dem allgemeinen Verständnis sehr dienlich.
A clear summary is very helpful for general understanding.
helpful
'hilfreich' and 'dienlich' both mean that something is useful for a task or a goal. 'hilfreich' sounds normal and fits well in everyday language, for example with tips, people, or explanations. 'dienlich' sounds more formal and is more likely to be used when something serves a particular purpose. In conversation, 'hilfreich' is usually more natural. 'dienlich' fits better in reports, official texts, or factual situations.
Für eine schnelle Lösung wäre ein ruhiges Gespräch dienlich.
A calm conversation would be useful for finding a quick solution.
Deine Zusammenfassung ist für die Prüfung sehr hilfreich.
Your summary is very helpful for the exam.