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

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

a must

verb
See also: must
References in periodicals archive ?
Quick hands and feet are a must. Play on the balls of your feet, not on your heels.
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.
A must request from B supplemental information to prepare its Form 1065 properly.
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.