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List of 15-letter words containing

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There are 16 fifteen-letter words containing I, M, O, P and X

ALEXIPHARMAKONSALEXIPHARMAKON n. an antidote to poison.
APPROXIMEETINGSAPPROXIMEETING n. the practice of a group of people making indefinite plans to meet and then altering those plans regularly via mobile phones according to changing circumstances.
EXCEPTIONALISMSexceptionalisms n. Plural of exceptionalism.
EXCEPTIONALISM n. the condition of being different from the norm.
EXEMPLIFICATIONexemplification n. The act of exemplifying; a showing or illustrating by example.
exemplification n. That which exemplifies; a case in point; example.
exemplification n. (Law) A copy or transcript attested to be correct by the seal of an officer having custody of the original.
EXPERIMENTATIONexperimentation n. The act of experimenting; practice by experiment.
experimentation n. (Sciences) A set of actions and observations, performed to verify or falsify a hypothesis or to research…
EXPERIMENTATION n. the act of experimenting.
EXTEMPORARINESSextemporariness n. The quality of being extemporary.
EXTEMPORARINESS n. the state of being extemporary.
EXTEMPORISATIONextemporisation n. (British spelling) Alternative spelling of extemporization.
EXTEMPORISATION n. the act of extemporising, also EXTEMPORIZATION.
EXTEMPORIZATIONextemporization n. The act of extemporizing; the act of doing anything extempore.
EXTEMPORIZATION n. the act of extemporizing, also EXTEMPORISATION.
IMMUNOCOMPLEXESimmunocomplexes n. Plural of immunocomplex.
IMMUNOCOMPLEX n. a complex formed between an antibody and an antigen.
IMPROVISATRIXESIMPROVISATRIX n. (archaic) a female improvisator, also IMPROVISATRICE.
INTERPAROXYSMALinterparoxysmal adj. Between paroxysms.
INTERPAROXYSMAL adj. between paroxysms.
NONEXPERIMENTALnonexperimental adj. Not experimental (of a research method).
NONEXPERIMENTAL adj. not experimental.
PARAMYXOVIRUSESparamyxoviruses n. Plural of paramyxovirus.
PARAMYXOVIRUS n. any of a group of viruses which includes the mumps and measles viruses.
PRIMOGENITRIXESPRIMOGENITRIX n. a female ancestor.
PROXIMATENESSESPROXIMATENESS n. the state of being proximate.
XENOMORPHICALLYXENOMORPHIC adv. having a form not its own.

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: 149 words
  • Scrabble in French: 24 words
  • Scrabble in Spanish: 43 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 28 words


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