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

Today, Carden, who's retired, is worried that the mega rich are again influencing politics here, and how expensive life is in his home state. —Kirk Siegler, NPR, 27 Mar. 2026

When combined with mega high tides and big swells, waves may batter beaches, causing severe erosion. —Laylan Connelly, Oc Register, 27 Mar. 2026

Airbnb announced that fans can stay overnight at her home for a limited time in honor of the 20th anniversary of the mega-popular Disney TV show that spawned a movie and endless merchandise, and catapulted Miley Cyrus into fame. —Paris Barraza, USA Today, 27 Mar. 2026

As one mega video game franchise launches a Happy Meal, another huge hit is right behind with a couple meals of its own. —Mike Snider, USA TODAY, 26 Mar. 2026

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"