all-important

adjective

all-im·​por·​tant ˌȯl-im-ˈpȯr-tᵊnt 

-tənt

: of very great or greatest importance

an all-important question

Synonyms of all-important

• essential
• necessary
• integral
• required
• needed
• needful
• vital
• critical
• crucial

Examples of all-important in a Sentence

that all-important item for a successful birthday party: a fancily decorated cake with candles

Recent Examples on the Web

In June, high schoolers sat for the bac, the all-important senior-year exam, amid record-breaking temperatures. — Lauren Collins, New Yorker, 9 Oct. 2026

If location isn’t all-important to you, you’ll still be taken in by the property’s palatial restaurant, secret garden above the bustling street, and relaxing pool—undoubtedly one of the longest in Lisbon. — Condé Nast, Condé Nast Traveler, 6 Oct. 2026

Even if the hackers have nothing else but the ability to trigger a push alert to Asos app users, that in itself is the ability to disrupt the all-important relationship with the shopper. — Evan Clark, Footwear News, 6 Oct. 2026

The analysts have grown more confident in Microsoft's growth trajectory, especially at its all-important Azure cloud unit, and less worried about pressure on the company's margins. — Natasha Abellard, CNBC, 23 Sep. 2026

Word History

First Known Use

1748, in the meaning defined above

Rhymes for all-important

• unimportant
• important

Kids Definition

all-important

adjective

all-im·​por·​tant

ˌȯ-lim-ˈpȯrt-ᵊnt, 

-ənt

: of very great importance

an all-important question