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

For an all-important sit-down dinner set inside Leonardo da Vinci’s Last Supper Museum, a team of Italian scenic painters—led by a woman who manages backdrops for an opera in Rome—built and painted a replica on a local soundstage that was about ¾ the size of the original. —Mara Reinstein, Architectural Digest, 1 May 2026

In the all-important holiday quarter, Starbucks saw a 3% increase in transactions as part of a 4% increase in comparable sales. —Paulina Likos, CNBC, 28 Apr. 2026

Beyond the core millennial customer, Ganni’s elevated positioning may have also affected its resonance with all-important Gen Z consumers looking ahead. —Maliha Shoaib, Vogue, 27 Apr. 2026

Elizabeth excelled in all the subjects that would prepare her to complete the all-important matura exam and enroll in university. —Marcy Thompson, Scientific American, 16 Apr. 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