a must

a must

That which is requisite, necessary, or indispensable. I know this book is a difficult read, but it's an absolute must if you enjoy literature. Taking the introductory course is a must if you want to sign up for the advanced class.
See also: must
Farlex Dictionary of Idioms.

a must

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]
See also: must
The American Heritage® Dictionary of Idioms by Christine Ammer.

a must

verb
See a must do
See also: must

must

verb
See a must do
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • must
  • in full
  • cut it
  • require (something) of (someone or something)
  • require of
  • take a message to Garcia
  • deliver the message to Garcia
  • Garcia
  • carry the message to Garcia
  • comedy equals tragedy plus time
References in periodicals archive
Quick hands and feet are a must. Play on the balls of your feet, not on your heels.
The BC's of great man-to-man defense. (Basketball)
If catching up with your friends is a must, crunch your lunch and chat for part of the time and flip open the books the other part.
Make the grade and still have a life!
A must request from B supplemental information to prepare its Form 1065 properly.
Different K-1s for different folks
Instead, A must reduce its tax attributes, to the extent of its insolvency, in the following order: NOLs (including carryovers), general business credits, capital loss carryovers, basis reduction of its property and, finally, foreign tax credit carryovers (Sec.
To gain the advantage of solvency, A must demonstrate that the FMV of its assets exceeded the values shown on its balance sheet.
Valuation of goodwill and going concern important in matters involving insolvency and change of ownership