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There are 19 fifteen-letter words containing I, N, 3O, 2S and U

AUTOIONISATIONSautoionisations n. Plural of autoionisation.
AUTOIONISATION n. self-ionizing, also AUTOIONIZATION.
COCONSCIOUSNESScoconsciousness n. An awareness of things on the edge of one’s consciousness that are only brought into focus under certain…
COCONSCIOUS n. aware of the same things, or various things within the same consciousness.
DICHOTOMOUSNESSdichotomousness n. The quality of being dichotomous.
DICHOTOMOUS n. forking into two equal branches.
DISCOLOURATIONSdiscolourations n. Plural of discolouration.
DISCOLOURATION n. the act of discolouring, also DISCOLORATION.
INODOROUSNESSESINODOROUSNESS n. INODOROUS, emitting no odor.
NEUROBIOLOGISTSneurobiologists n. Plural of neurobiologist.
NEUROBIOLOGIST n. one who studies neurobiology.
NONCONSUMPTIONSNONCONSUMPTION n. something that is not consumption.
NOTORIOUSNESSESNOTORIOUSNESS n. NOTORIOUS, infamous.
OBNOXIOUSNESSESobnoxiousnesses n. Plural of obnoxiousness.
OBNOXIOUSNESS n. the state of being obnoxious.
ODORIFEROUSNESSodoriferousness n. The quality of being odoriferous.
ODORIFEROUS n. giving off an odour; morally offensive, also ODIFEROUS.
OPISTHOGNATHOUSopisthognathous adj. (Zoology) Having retreating jaws or teeth.
OPISTHOGNATHOUS adj. with receding jaws.
OPPROBRIOUSNESSopprobriousness n. The state or condition of being opprobrious.
OPPROBRIOUS n. expressing contemptuous reproach; bringing disgrace.
OSMOREGULATIONSosmoregulations n. Plural of osmoregulation.
OSMOREGULATION n. regulation of osmotic pressure esp. in the body of a living organism.
OUTDOORSMANSHIPoutdoorsmanship n. Skill in, or fondness for, outdoor pursuits or sports.
OUTDOORSMANSHIP n. the craft of the outdoorsman.
PNEUMONOLOGISTSpneumonologists n. Plural of pneumonologist.
PNEUMONOLOGIST n. one who studies pneumonology.
POISONOUSNESSESPOISONOUSNESS n. POISONOUS, having the quality or effect of poison.
POSTPRODUCTIONSpostproductions n. Plural of postproduction.
post-productions n. Plural of post-production.
POSTPRODUCTION n. the period following filming or taping in which a motion picture or television show is readied for public presentation.
PSEUDOSCORPIONSpseudoscorpions n. Plural of pseudoscorpion.
PSEUDOSCORPION n. any of various small arachnids of the order Pseudoscorpiones, resembling a scorpion but tailless, and found in soil, leaf litter, bark, etc.
PSEUDOSOLUTIONSpseudosolutions n. Plural of pseudosolution.
PSEUDOSOLUTION n. a false solution.

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: 101 words
  • Scrabble in French: 46 words
  • Scrabble in Spanish: 13 words
  • Scrabble in Italian: 20 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 3 words


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