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 backstory This was one of the original luxury hotels in town, opening in 2005, when Doha was just beginning its journey to become a mega destination rivaling Dubai and Abu Dhabi. —Condé Nast, Condé Nast Traveler, 1 June 2026

The mega retailer saw sales rise 7% during its fiscal first quarter, but only reaffirmed its full-year outlook, and issued weaker guidance for the second quarter than Wall Street expected. —Gabrielle Fonrouge, CNBC, 1 June 2026

Like mega-mountain resorts, parks offer season passes to try to stabilize revenue. —HubSpot, 1 June 2026

Testimony to its popularity, a carbon copy of the land opened with Universal’s Beijing mega resort in 2021 and was also added to its parks in Hollywood and Osaka in 2016 and 2014 respectively. —Caroline Reid, Forbes.com, 31 May 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"