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

The show is based on the 1984 classic, which became a box office hit with nearly $100 million worldwide and inspired the mega-selling album of the same name. — Rebecca Rubin, Variety, 10 Nov. 2026

Latcham shepherded such mega MCU franchises as Iron Man, Guardians of the Galaxy, Spider-Man and The Avengers. — Anthony D'alessandro, Deadline, 9 Nov. 2026

Unlike Vegas casinos, where hosts typically confirm the assets of their mega-rich whales, online sportsbooks don’t typically do so. — New Yorker, 8 Nov. 2026

Anya Taylor-Joy also went for volume in her vintage Pierre Cardin, which included a mega-ruffled duster coat. — Christian Allaire, Vogue, 8 Nov. 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"