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List of 15-letter words containing

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There are 7 fifteen-letter words containing C, E, 2F, O and S

DIFFRACTOMETERSdiffractometers n. Plural of diffractometer.
DIFFRACTOMETER n. an instrument for determining structure of crystal through light diffraction.
DISAFFECTIONATEdisaffectionate adj. Not disposed to affection; unfriendly.
DISAFFECTIONATE adj. showing disaffection.
EFFICACIOUSNESSefficaciousness n. Quality of being efficacious.
EFFICACIOUS n. having the power to produce a desired effect.
INEFFICACIOUSLYinefficaciously adv. Without efficacy or effect.
INEFFICACIOUS adv. lacking the power to produce a desired effect.
INOFFICIOUSNESSinofficiousness n. The quality of being inofficious.
INOFFICIOUS n. not officious.
OFFICIOUSNESSESofficiousnesses n. Plural of officiousness.
OFFICIOUSNESS n. OFFICIOUS, volunteering one's services too eagerly.
SCHIZOAFFECTIVEschizoaffective adj. (Psychiatry) Combining the symptoms of schizophrenia with those of bipolar disorder.
schizoaffective n. A person who has a schizoaffective disorder.

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 WikWik.org and 1Word.ws.

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