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

Adjective

• huge
• giant
• gigantic
• massive
• colossal
• enormous
• vast
• tremendous
• mammoth
• monumental
• immense
• astronomical
• bumper
• astronomic
• titanic
• big
• monster
• mighty

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 announcement follows an update from HGTV in August of additional new episodes, including a new season of the mega popular house flipping competition show, The Flip Off, starring Heather and Tarek El Moussa against Christina Haack. —Natalia Senanayake, PEOPLE, 22 Oct. 2025

Joe Walsh and Zac Brown are joining The Voice Season 28 as mega mentors. —Armando Tinoco, Deadline, 20 Oct. 2025

Artists such as Taylor Swift, Jennifer Hudson, Sting, Wynonna Judd, and Keith Urban have all served as mega mentors in the past. —Tomás Mier, Rolling Stone, 20 Oct. 2025

Time will tell how this season plays out, but as things stand, Reaves is in a great spot for a mega deal next summer. —Ricardo Klein, MSNBC Newsweek, 20 Oct. 2025

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"