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

Adjective

• astronomical
• astronomic
• Brobdingnagian
• bumper
• colossal
• cosmic
• cosmical
• cyclopean
• elephantine
• enormous
• galactic
• gargantuan
• giant
• gigantesque
• gigantic
• grand
• herculean
• heroic
• heroical
• Himalayan
• huge
• humongous
• humungous
• immense
• jumbo
• king-size
• king-sized
• leviathan
• mammoth
• massive
• mighty
• monster
• monstrous
• monumental
• mountainous
• oceanic
• pharaonic
• planetary
• prodigious
• super
• super-duper
• supersize
• supersized
• titanic
• tremendous
• vast
• vasty
• walloping
• whacking
• whopping

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

What came after mega runway shows and supersized flagship openings in China from the pandemic era were small and beautiful exhibitions for the masses. —Tianwei Zhang, WWD, 25 Mar. 2025

Over 79% of the mega bankruptcies cited it as a significant contributing factor. —Joe Camberato, Forbes, 21 Mar. 2025

Where to Stay: Just two blocks from Calle 38, a public beach in Playa del Carmen, adult-only Hotel La Semilla is a nine-room oasis in a sea of mega resorts. —Jen Murphy, Outside Online, 21 Mar. 2025

But three months later, de Armas, who is also from Cuba, was photographed leaving a London eatery with someone completely new – and mega famous. —Madeleine Marr, Miami Herald, 17 Mar. 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"