a must

Idioms  

1. A necessity; a requirement. For example, The Louvre is a must for visitors to Paris, or This book is a must for serious students of English. [Late 1800s]

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Example Sentences

European Commission President Ursula Von der Leyen vowed that the loan would be delivered "one way or the other", while Macron said there would be "no plan B" for the funds, because "plan A must be implemented".

From BBC

"The protection of the civilians is a must for all the parties in conflict, and both the parties in conflict need to respect international humanitarian law."

From Barron's

Expect to do a lot of walking — comfortable shoes are a must — but the sheer variety of vehicles and exhibits makes it easy to spend hours exploring.

From Salon

“But this transaction was always a ‘nice to have’ at the right price, not a ‘must have’ at any price,” the Netflix chiefs said.

From Los Angeles Times

Netflix now says Warner would have been “nice to have” but not a “must have.”

From The Wall Street Journal

Related Words

• mandatory
• necessary
• obligatory
• required