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There are 18 twelve-letter words containing M, N, 2O, P, R, S and U

COMPOSTURINGCOMPOSTURE v. to treat with compost.
CRYPTONYMOUScryptonymous adj. Relating to, or published under, a cryptonym.
CRYPTONYMOUS adj. like a cryptonym, a secret name.
MISPRONOUNCEmispronounce v. (Transitive) To pronounce (A word, phrase, etc.) incorrectly.
MISPRONOUNCE v. to pronounce incorrectly.
MONOMORPHOUSmonomorphous adj. Monomorphic.
MONOMORPHOUS adj. existing in one form only.
MONOSPERMOUSmonospermous adj. (Botany) Having only one seed.
MONOSPERMOUS adj. producing only one seed, also MONOSPERMAL.
MUCOPROTEINSmucoproteins n. Plural of mucoprotein.
MUCOPROTEIN n. any of various complex conjugated proteins that contain polysaccharides and occur in body fluids and tissues.
NONCOMPUTERSSorry, definition not available.
OMBUDSPERSONombudsperson n. A person of any gender who performs the function historically defined by the term ombudsman.
OPPORTUNISMSopportunisms n. Plural of opportunism.
OPPORTUNISM n. the practice of regulating actions by favourable opportunities rather than consistent principles.
OUTPROMISINGoutpromising v. Present participle of outpromise.
OUTPROMISE v. to surpass in promising.
PARONYMOUSLYparonymously adv. In a paronymous way.
PARONYMOUS adv. having the nature of a paronym.
PARSIMONIOUSparsimonious adj. Exhibiting parsimony; sparing in the expenditure of money; frugal to excess.
parsimonious adj. Using a minimal number of assumptions, steps, or conjectures.
parsimonious adj. (Sports) Not conceding many goals.
POSITRONIUMSpositroniums n. Plural of positronium.
POSITRONIUM n. a positron and and an electron bound together in a short-lived unit, similar to a hydrogen atom.
POSTCONSUMERpostconsumer adj. After use by a consumer.
PSEUDORANDOMpseudorandom adj. Of a sequence of numbers, such that it has all the properties of a random sequence following some probability…
PSEUDORANDOM adj. being or involving entities (as numbers) that are selected by a definite computational process but that satisfy one or more standard tests for statistical randomness.
SPERMOGONIUMspermogonium n. (Lichenology) A conceptacle of certain lichens, containing spermatia.
SPERMOGONIUM n. a flask-shaped structure in some fungi, also SPERMOGONE.
SPORANGIOLUMsporangiolum n. (Mycology) a small sporangium.
SPORANGIOLUM n. a sporangium containing one or few spores, also SPORANGIOLE.
TEMPORANEOUStemporaneous adj. (Obsolete) temporary.
TEMPORANEOUS adj. (obsolete) lasting only a short while.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 59 words
  • Scrabble in French: 22 words
  • Scrabble in Spanish: 19 words
  • Scrabble in Italian: 12 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 9 words


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