all-important

[ awl-im-pawr-tnt ]

/ ˈɔl ɪmˈpɔr tnt /

extremely or vitally important; essential.

Origin of all-important

First recorded in 1830–40

The benefits of incumbency are quite potent, especially in the all-important area of raising campaign funds.

The Unbearable Whiteness of Congress |Dean Obeidallah |January 8, 2015 |DAILY BEAST
Piketty only waves his hands around the all-important question of whether economic inequality undermines democracy.

American Democracy Under Threat for 250 Years |Jedediah Purdy |December 28, 2014 |DAILY BEAST
One agent in particular developed a rapport with Zubaydah and managed to elicit an all-important bit of intelligence.

The Luxury Homes That Torture and Your Tax Dollars Built |Michael Daly |December 12, 2014 |DAILY BEAST
To create that all-important alcohol content, the fumes are circulated out of the still into condensers.

When It Comes to Great Whisky, The Size of Your Still Matters | |December 9, 2014 |DAILY BEAST

Many improbable catastrophes might wreck the all-important Iran negotiations.

Iranian Bombs and Black Swans in the Nuclear Negotiations |Christopher Dickey |December 17, 2013 |DAILY BEAST
Presently Mrs Beaumont recovered herself sufficiently to put an all-important question.

Flaming June |Mrs. George de Horne Vaizey
Nor could the searchlights be switched on without grave risk to the all-important task of rounding-up the German torpedo-boats.

Billy Barcroft, R.N.A.S. |Percy F. Westerman
It was the first confident answer to the all-important question.

Afloat in the Forest |Mayne Reid
Athletics, however, contains an element which is all-important—team work.

The Library of Work and Play: Guide and Index |Cheshire L. Boone
What to many was but the fad or fashionable craze of the hour, was to him the all-important and absorbing purpose of living.

De Orbe Novo, Volume 1 (of 2) |Trans. by Francis Augustus MacNutt

all-important

crucial; vital