There are 230 words with the prefix MEGA in our word list of 359,039 words, and every one of them is on this page — grouped by length so you can scan fast, with a live filter when you need something narrower. The biggest group is the 9-letter words (40 of them); the spread is 2 of them 6 letters long, 12 of them 7 letters long, 28 of them 8 letters long, 40 of them 9 letters long, and more up to 15 letters. The longest entries are megachiropteran, megagametophyte and megalichthyidae. Word-game players keep lists like this open for a reason: Scrabble and Words With Friends reward the obscure corners of the dictionary, crossword solvers live on pattern matching, and Wordle players work by elimination.
The prefix MEGA- means large or great — in science words, exactly one million (megabyte, megaphone, megacity) — three examples from this page: megaara, megabar, megabars.
The full list
6-letter words (2)
megara megass
7-letter words (12)
megaara megabar megabit megaera megaerg megafog megapod megarad megaric megaron megasse megaton
8-letter words (28)
megabars megabaud megabits megabuck megabyte megacity megacosm megadont megadyne megaleme megalerg megalith megalopa megalops megamere megapode megarian megarons megaseme megasoma megasses megatons megatron megatype megatypy megavolt megawatt megaword
9-letter words (40)
megabucks megabytes megaceros megachile megacolon megacurie megacycle megadeath megadonty megadrili megadynes megafarad megahertz megajoule megalaema megalania megalesia megaliths megalodon megalonyx megalopia megalopic megameter megametre megampere meganeura megaphone megapodes megapolis megaptera megascope megaseism megaspore megathere megatherm megavolts megawatts megaweber megawords megazooid
10-letter words (28)
megacerine megachilid megacycles megadeaths megadontia megadontic megagamete megalesian megalithic megalocyte megalodont megalopine megalopore megalopsia megalopyge megalornis megalosaur megaparsec megaphoned megaphones megaphonic megaphyton megapodius megarhinus megarhyssa megasclere megascopic megasporic
11-letter words (37)
megacephaly megacoulomb megadontism megahertzes megaladapis megalensian megaloblast megaloceros megalograph megalomania megalomanic megalomelia megalopenis megalopidae megalopinae megalopolis megaloptera megaloscope megaloscopy megaluridae meganucleus megaphoning megapodidae megapolitan megapterine megarensian megarianism megascleric megasclerum megaseismic megatherian megatherine megatherium megathermal megathermic megatheroid megavitamin
12-letter words (29)
megacephalia megacephalic megacerotine megachilidae megadynamics megalaemidae megalecithal megalesthete megalichthys megalocardia megalocornea megalodontia megalography megalomaniac megalophonic megalopsychy megalopteran megalosaurus megalosphere megaloureter meganthropus megaphyllous megapodiidae megapterinae megasclerous megascopical megasporange megatherioid megazoospore
13-letter words (24)
megacephalous megakaryocyte megaloblastic megalocarpous megalocephaly megalochirous megalocytosis megaloenteron megalogastria megaloglossia megalohepatia megalomaniacs megalophonous megalopolises megalopolitan megalopterous megalopygidae megalosaurian megalosauroid megalospheric megalosplenia megaprosopous megasynthetic megatheriidae
14-letter words (18)
megachiroptera megakaryoblast megakaryocytic megalactractus megalethoscope megalocephalia megalocephalic megalodactylia megalodontidae megalomaniacal megalonychidae megalopolistic megalosauridae megamastictora megaphonically megascopically megasporangium megasporophyll
15-letter words (12)
megachiropteran megagametophyte megalichthyidae megalobatrachus megalocephalous megalodactylism megalodactylous megalokaryocyte megalophthalmus megalornithidae megamastictoral megaphotography
Frequently asked questions
How many words with the prefix MEGA are there?
Our word list contains 230 words with the prefix MEGA, out of 359,039 entries in total. They run from 6 to 15 letters, and the 9-letter group is the largest with 40 words.
What are the longest words with the prefix MEGA?
The longest are megachiropteran (15 letters), megagametophyte (15 letters) and megalichthyidae (15 letters).
Which words with the prefix MEGA score highest in Scrabble?
By raw letter values, the top scorers on this page are megaphotography (32 points), megakaryocytic (31 points) and megalichthyidae (30 points) — before any letter or word multipliers. One honest caveat: this list is a broad English word list, so a few rare or technical entries appear that official game dictionaries (and Wordle’s answer list) do not accept. Always check a play against the dictionary your game uses.
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