importantly

adverb

im·​por·​tant·​ly im-ˈpȯr-tᵊnt-lē 

especially Southern US and New England -tənt-, 

-dənt-

1

—used to say that what follows in a sentence is important

… much more importantly he stands a chance of having his publication barred …

—H. L. Mencken

2

a

: in an important way

… contributed importantly to the language of the field.

—Ernst Mayr

… the real story is importantly different from the one surmised.

—Alexander Woollcott

b

: in a self-important or pompous manner

… he talked importantly of the managerial position he had reached, after a lifetime of devotion and toil …

—William Trevor

Importantly vs. Important: Usage Guide

A number of commentators have objected to importantly as a sentence modifier (the use defined above at sense 1) and have recommended important instead. Actually, both the adverb and the adjective are in reputable standard use in this function. Important is always used with more or most.

had bronze weapons and composite bows; more important, they utilized the horse and war chariot

—Harry A. Gailey, Jr.

second and most important, the book contains no important woman character

—F. Scott Fitzgerald

Importantly is commonly used in similar contexts, but it is somewhat more flexible in not requiring more or most.

sticks and, just as importantly, unsticks easily

—Phoebe Hawkins

importantly, the leaven in the mixture is quality

—George O'Brien

Examples of importantly in a Sentence

Her research has contributed importantly to our understanding of the disease.

He strutted to and fro importantly, ordering everybody around.

Recent Examples on the Web

His serve and forehand were on point, but most importantly, his returns were effective. — Ava Wallace, New York Times, 14 Aug. 2026

More importantly, part of what propels the narrative in the book is Bret being the only one of his friends to see a dark side to Robert. — Louis Peitzman, Vulture, 13 Aug. 2026

And more importantly, all of our girls — all of our kids — who want to play sports deserve the same privacy and support in their gender expression. — Julia Poe, Chicago Tribune, 13 Aug. 2026

More importantly, the China business, long a stalwart, started a sickening double-digit decline. — Jim Cramer, CNBC, 13 Aug. 2026

Word History

First Known Use

1611, in the meaning defined at sense 2