1
: vast
a mega electronics store
2
: of the highest level of rank, excellence, or importance
a number one hit made her mega
variants
or meg-
1
a
: great : large
megaspore
b
: greatly surpassing others of its kind
megahit
2
: million (106)
megohm
megacycle
Synonyms
Adjective
- astronomical
- astronomic
- Brobdingnagian
- bumper
- colossal
- cosmic
- cosmical
- cyclopean
- elephantine
- enormous
- galactic
- gargantuan
- giant
- gigantesque
- gigantic
- grand
- herculean
- heroic
- heroical
- Himalayan
- huge
- humongous
- humungous
- immense
- jumbo
- king-size
- king-sized
- leviathan
- mammoth
- massive
- mighty
- monster
- monstrous
- monumental
- mountainous
- oceanic
- pharaonic
- planetary
- prodigious
- super
- super-duper
- supersize
- supersized
- titanic
- tremendous
- vast
- vasty
- walloping
- whacking
- whopping
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
Jen McCaffrey, The Athletic, 17 Feb. 2025
Dance music was at its peak, and some of the greats were merely scratching the surface of what would become mega careers.
—Stephanie Sengwe, People.com, 15 Feb. 2025
Yes, there was a mega screen for fans in the rafters to see the action on stage, but the Timberlake of 2025 is less interested in theatrics.
—Britt Julious, Chicago Tribune, 15 Feb. 2025
The right is central to athlete endorsement and sponsorship deals, which reward an athlete for their marketability and can range from the very lucrative for mega stars to the non-existent for ordinary athletes.
—Michael McCann, Sportico.com, 12 Feb. 2025
See all Example Sentences for mega 
Examples are automatically compiled from online sources to
show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Adjective
Soto chose the Mets, which could have been a knock-out blow for an ownership group that in recent years had admittedly been averse to mega contracts.
—Jen McCaffrey, The Athletic, 17 Feb. 2025
Dance music was at its peak, and some of the greats were merely scratching the surface of what would become mega careers.
—Stephanie Sengwe, People.com, 15 Feb. 2025
Yes, there was a mega screen for fans in the rafters to see the action on stage, but the Timberlake of 2025 is less interested in theatrics.
—Britt Julious, Chicago Tribune, 15 Feb. 2025
The right is central to athlete endorsement and sponsorship deals, which reward an athlete for their marketability and can range from the very lucrative for mega stars to the non-existent for ordinary athletes.
—Michael McCann, Sportico.com, 12 Feb. 2025
See all Example Sentences for mega
Dictionary Entries Near mega
Cite this Entry
“Mega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mega. Accessed 23 Feb. 2025.
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