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

Announcements of mega projects, defined as those with more than $1 billion of investment, were up 85% year to date (through September). — Zev Fima, CNBC, 3 Nov. 2026

The deals come as the ChatGPT maker is reportedly looking to lock down a mega funding round ahead of an IPO. — Kelsey Warner, semafor.com, 2 Nov. 2026

Escape The Great Pumpkin of SoCal mega EDM events this season, this Insomniac institution has all the usual heavy hitters (Zedd, Nina Kraviz, Disco Lines, Cloonee). — Los Angeles Times, 30 Oct. 2026

Besides their Disney upbringings, mega-successful careers, and covetable style, both leading ladies wear the Hung Vanngo Red Carpet Skin Luminous Longwear Serum Foundation. — Reece Andavolgyi, InStyle, 30 Oct. 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"