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
Phillip Molnar, San Diego Union-Tribune, 8 Jan. 2025
Trump’s record-breaking inauguration Donald Trump’s transition team has already amassed a mega budget to throw an inauguration bash for the ages.
—Andrew Ross Sorkin, New York Times, 8 Jan. 2025
The ultra-fast-fashion player Shein is also said to have looked at a mega IPO, although an offering on Wall Street was held up by lawmakers who are wary of the company’s Chinese roots and business model.
—Evan Clark, WWD, 6 Jan. 2025
In recent years, the government has flattened entire neighborhoods – including some of the city’s most historic – to make way for new skyscrapers, mega shopping centers, wider roads, and parks.
—Samuel Getachew, The Christian Science Monitor, 6 Jan. 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
This includes huge home TV screens that compete with the mega film releases that in the past were exciting to see on the mega theater screens.
—Phillip Molnar, San Diego Union-Tribune, 8 Jan. 2025
Trump’s record-breaking inauguration Donald Trump’s transition team has already amassed a mega budget to throw an inauguration bash for the ages.
—Andrew Ross Sorkin, New York Times, 8 Jan. 2025
The ultra-fast-fashion player Shein is also said to have looked at a mega IPO, although an offering on Wall Street was held up by lawmakers who are wary of the company’s Chinese roots and business model.
—Evan Clark, WWD, 6 Jan. 2025
In recent years, the government has flattened entire neighborhoods – including some of the city’s most historic – to make way for new skyscrapers, mega shopping centers, wider roads, and parks.
—Samuel Getachew, The Christian Science Monitor, 6 Jan. 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 18 Jan. 2025.
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