mega

1 of 2

adjective

ˈme-gə 

1

: vast

a mega electronics store

2

: of the highest level of rank, excellence, or importance

a number one hit made her mega

mega-

2 of 2

combining form

variants or meg-

1

a

: great : large

megaspore

b

: greatly surpassing others of its kind

megahit

2

: million (10⁶)

megohm

megacycle

Synonyms of mega

Adjective

• huge
• giant
• gigantic
• massive
• colossal
• vast
• enormous
• tremendous
• mammoth
• monumental
• astronomical
• immense
• bumper
• big
• monster
• titanic

Examples of mega in a Sentence

Adjective

an actor who has become a mega celebrity

I will never understand why people build those mega houses on tiny lots.

Recent Examples on the Web

Adjective

Showing amid major French luxury brands with mega marketing budgets, sets and huge staffs, Chavarria’s runway shows nonetheless became the buzz of Paris for their authenticity, social commentary — and unique designs for men and women. —Jean E. Palmieri, Footwear News, 28 Oct. 2025

Nobody Wants This cast on RadioAndy, the Bravo personality, 57, told the actress, who voices Anna in the mega-popular Disney franchise, that his 6-year-old son Ben doesn't like one of film's major characters. —Hannah Sacks, PEOPLE, 28 Oct. 2025

The mega cap tech giant has been at the forefront of the most talked about theme this year – and likely next — which companies will be among the AI winners. —Paulina Likos, CNBC, 24 Oct. 2025

Passive has further enabled the birth of Big Tech, mega-cap market hegemons that reap outsized riches from self-reinforcing lofty valuations. —Mike Terwilliger, Fortune, 24 Oct. 2025

Word History

Etymology

Adjective

mega-

Combining form

Greek, from megas large — more at much

First Known Use

Adjective

1968, in the meaning defined at sense 1

Rhymes for mega

• omega

Kids Definition

mega-

combining form

variants or meg-

1

: great : large

megaspore

2

: million : multiplied by one million

megahertz

3

: to the highest or greatest degree

mega-successful

Etymology

Combining form

from Greek megas "large"