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

All five stocks are members of the Magnificent Seven, a group of mega-cap technology stocks that has been credited with propelling the market to record highs over recent years. — Alex Harring,luke Fountain, CNBC, 2 July 2026

At the first mega master hearing in San Diego in mid-June, around 50 people were ordered deported, out of the 80 people scheduled to appear, according to Daylight San Diego. — Itzel Luna, Los Angeles Times, 1 July 2026

As the mega pop star and the Kansas City Chiefs tight end's wedding at New York City's most iconic venue, Madison Square Garden, nears, sources tell PEOPLE that guests must dress to impress — but ditch their cellphones. — Ashlyn Robinette, PEOPLE, 1 July 2026

Now, Vicus has closed its debut fund at $55 million, a frankly contrarian number in a mega-fund world (and even for an emerging manager). — Allie Garfinkle, Fortune, 30 June 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"