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There are 12 twelve-letter words containing I, M, N, 2O, P, R and U

COMPOSTURINGCOMPOSTURE v. to treat with compost.
COMPURGATIONcompurgation n. (Now chiefly historical) Acquitting someone from a formal charge or accusation following the sworn oaths…
COMPURGATION n. the exoneration of an accused person on the basis of oaths sworn by other persons.
MISPRONOUNCEmispronounce v. (Transitive) To pronounce (A word, phrase, etc.) incorrectly.
MISPRONOUNCE v. to pronounce incorrectly.
MUCOPROTEINSmucoproteins n. Plural of mucoprotein.
MUCOPROTEIN n. any of various complex conjugated proteins that contain polysaccharides and occur in body fluids and tissues.
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.
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.
POORMOUTHINGpoormouthing v. Present participle of poormouth.
POORMOUTH v. to complain about being poor.
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.
PROMULGATIONpromulgation n. The act of promulgating or announcing something, especially a proclamation announcing a new law.
PROMULGATION n. the act of promulgating.
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.

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: 48 words
  • Scrabble in French: 26 words
  • Scrabble in Spanish: 16 words
  • Scrabble in Italian: 37 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 27 words


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