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There are 15 fifteen-letter words containing I, M, 2N, O, S and 2U

CIRCUMNUTATIONScircumnutations n. Plural of circumnutation.
CIRCUMNUTATION n. rotation in a nodding position, as the helical path described by the growing point of a plant.
IMMUNODIFFUSIONimmunodiffusion n. A technique used to detect the reaction between an antigen and an antibody by observing the behavior…
IMMUNODIFFUSION n. any of various analytical techniques that involve antigen and antibody solutions diffusing toward each other in a gel until antibody binds specifically to antigen to form a precipitate.
IMMUNOGLOBULINSimmunoglobulins n. Plural of immunoglobulin.
IMMUNOGLOBULIN n. an immune protein.
IMMUNOSTIMULANTimmunostimulant n. (Immunology, pharmacology) Any substance that stimulates an immune response.
immunostimulant adj. (Immunology, pharmacology) That stimulates an immune response.
IMMUNOSTIMULANT n. a drug or nutrient which stimulates the body's immune system.
IMPECUNIOUSNESSimpecuniousness n. The property of being impecunious.
IMPECUNIOUS n. without money; penniless.
MISPUNCTUATIONSmispunctuations n. Plural of mispunctuation.
MISPUNCTUATION n. a wrong punctuation.
MOUNTAINOUSNESSmountainousness n. The quality of being mountainous.
MOUNTAINOUSNESS n. the state of being mountainous.
MUCOSANGUINEOUSmucosanguineous adj. (Medicine) Containing mucus and blood.
MUCOSANGUINEOUS adj. consisting of mucus and blood.
NEUROCOMPUTINGSNEUROCOMPUTING n. computing using neural networks to mimic the action of the human brain.
NONEQUILIBRIUMSnonequilibriums n. Plural of nonequilibrium.
NONEQUILIBRIUM n. lack of equilibrium.
NONSIMULTANEOUSnonsimultaneous adj. Not simultaneous.
NONSIMULTANEOUS adj. not simultaneous.
UNANIMOUSNESSESUNANIMOUSNESS n. UNANIMOUS, of one mind.
UNCEREMONIOUSLYunceremoniously adv. In an unceremonious manner, abruptly, without the due formalities.
UNCEREMONIOUS adv. not ceremonious.
UNCIRCUMCISIONSuncircumcisions n. Plural of uncircumcision.
UNCIRCUMCISION n. the state of not being circumcised.
UNMELODIOUSNESSunmelodiousness n. The quality of being unmelodious.
UNMELODIOUSNESS n. the state of being unmelodious.

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 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 68 words
  • Scrabble in French: 4 words
  • Scrabble in Spanish: 11 words
  • Scrabble in Italian: 4 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 38 words


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