must (EN)

verb, noun

verb “must”

1. to be obligated or required to do something
   Mellen Iech un, fir d'Iwwersetzungen vun den Beispillsätz an d'monolingual Definitioune vun all Wuert ze gesinn.

   You must wear a helmet to ride the bike safely.
2. to indicate a high likelihood or certainty of something being true
   She must know the answer, she studied all night.

noun “must”

1. an essential or necessary thing
   For a successful cake, precise measurements are a must.