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 investors best positioned for this market--mega-cap balance sheets, sovereign funds, multi-decade endowments--simply don't need their money back on any timeline. — Carrie McCabe, Forbes.com, 23 July 2026

The lead singer of Black Sabbath performed while sitting in a black, throne-like chair topped with a bat at the mega concert at the Villa Park stadium. — Lianne Kolirin, CNN Money, 22 July 2026

The couple came in second on the Peacock reality series, and have largely kept their relationship private since finding mega success. — Mekishana Pierre, Entertainment Weekly, 22 July 2026

Fox had just wrapped his breakout run on the mega-popular NBC comedy series Family Ties as Alex Keaton, the conservative son to lefty parents, when he was diagnosed. — David Canfield, HollywoodReporter, 22 July 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"