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List of 12-letter words containing

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There are 18 twelve-letter words containing I, N, O, 2P, S and Y

HYPNOPAEDIASHYPNOPAEDIA n. training or instruction during sleep.
HYPNOPHOBIASHYPNOPHOBIA n. an irrational fear of sleep.
INAPPOSITELYinappositely adv. In a way that is not apposite.
INAPPOSITE adv. not apposite.
LYMPHOPENIASlymphopenias n. Plural of lymphopenia.
LYMPHOPENIA n. an abnormally low level of lymphocytes in the blood.
OPPRESSINGLYoppressingly adv. So as to oppress; with or by means of oppression; oppressively.
OPPRESSING adv. OPPRESS, to treat with tyrannical injustice.
PHONOTYPISTSphonotypists n. Plural of phonotypist.
PHONOTYPIST n. one who practises phonotypy.
PHYCOPHAEINSPHYCOPHAEIN n. a brown pigment found in seaweeds.
PLATINOTYPESplatinotypes n. Plural of platinotype.
PLATINOTYPE n. an obsolete method of photography by reducing a compound of platinum.
PODOPHYLLINSpodophyllins n. Plural of podophyllin.
PODOPHYLLIN n. a cathartic resin obtained from the rhizomes of the Podophyllum genus, also PODOPHYLIN.
POLYISOPRENEpolyisoprene n. (Chemistry) Any polymer whose constituent monomer is isoprene; especially natural, and some synthetic, rubbers.
POLYISOPRENE n. a rubberlike polymer of isoprene.
POLYPHONISTSpolyphonists n. Plural of polyphonist.
POLYPHONIST n. a contrapuntist, one who writes counterpoint.
POLYSYNAPTICpolysynaptic adj. (Of a reflex or impulse) of or involving multiple synapses.
POLYSYNAPTIC adj. involving two or more synapses in the central nervous system.
PORPHYROPSINporphyropsin n. Any of a group of purple carotenoid pigments, similar to rhodopsin, in the retinas of some fish.
PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin.
POSTHYPNOTICposthypnotic adj. After being hypnotized.
POSTHYPNOTIC adj. taking place after hypnosis.
POSTSYNAPTICpostsynaptic adj. (Cytology) In a synapse, of or pertaining to the neuron that bears receptors for neurotransmitter released…
POSTSYNAPTIC adj. occurring after synapsis.
PROPHESYINGSprophesyings n. Plural of prophesying.
PROPHESYING n. the act of prophesying.
PROPYLAMINESpropylamines n. Plural of propylamine.
PROPYLAMINE n. an amine of propyl.
PSILANTHROPYpsilanthropy n. (Theology) The doctrine that Jesus Christ was merely human.
PSILANTHROPY n. the belief that Christ was not divine but divinely inspired.

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: 97 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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