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There are 16 fifteen-letter words containing O, 2P, R, 3S and T

OPPORTUNENESSESOPPORTUNENESS n. OPPORTUNE, happening at the right time.
PETROPHYSICISTSpetrophysicists n. Plural of petrophysicist.
PETROPHYSICIST n. a student of petrophysics.
PHILOSOPHASTERSphilosophasters n. Plural of philosophaster.
PHILOSOPHASTER n. an amateur or superficial philosopher.
POSTMASTERSHIPSpostmasterships n. Plural of postmastership.
POSTMASTERSHIP n. the office of postmaster.
PRECIPITOUSNESSprecipitousness n. The state or quality of being precipitous.
PRECIPITOUSNESS n. the state of being precipitous.
PREDISPOSITIONSpredispositions n. Plural of predisposition.
PREDISPOSITION n. an inclination.
PRESUPPOSITIONSpresuppositions n. Plural of presupposition.
PRESUPPOSITION n. a preliminary supposition.
PROSPECTIVENESSprospectiveness n. The quality of being prospective.
PROSPECTIVENESS n. the state of being prospective.
PSILANTHROPISMSPSILANTHROPISM n. the denial of Christ's divinity.
PSILANTHROPISTSpsilanthropists n. Plural of psilanthropist.
PSILANTHROPIST n. one who denies Christ's divinity.
SPECTROSCOPISTSspectroscopists n. Plural of spectroscopist.
SPECTROSCOPIST n. one who uses a spectroscope.
SPINTHARISCOPESspinthariscopes n. Plural of spinthariscope.
SPINTHARISCOPE n. an instrument for visually detecting alpha particles.
STREPTOCARPUSESstreptocarpuses n. Plural of streptocarpus.
STREPTOCARPUS n. any flowering plant of the Cape primrose genus Streptocarpus, with foxglove-like flowers.
SUPERPHOSPHATESsuperphosphates n. Plural of superphosphate.
SUPERPHOSPHATE n. acid phosphate.
SUPERSCRIPTIONSsuperscriptions n. Plural of superscription.
SUPERSCRIPTION n. something written above.
SUPPORTABLENESSsupportableness n. The state of being supportable.
SUPPORTABLENESS n. the state of being supportable.

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: 24 words
  • Scrabble in Spanish: 11 words
  • Scrabble in Italian: 27 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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