zwingend
Translation
compelling, mandatory, imperative, conclusive
Examples
Es gibt einen zwingenden Grund dafür.
There is a compelling reason for it.
Das ist nicht zwingend erforderlich.
That is not strictly necessary.
Grammar Patterns
a compelling reason ein zwingender Grund
Similar Words
Synonyms: notwendig, erforderlich, obligatorisch; Antonyms: optional, freiwillig (voluntary)
Etymology
The present participle of the verb 'zwingen' (to force, to compel). It describes something that has a 'forcing' quality.
Memory Tips
Think of a reason that 'forces' ('zwingt') you to accept it. That's a 'zwingender Grund' - a compelling reason.