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List of 15-letter words beginning with

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There are 5 fifteen-letter words beginning with OPE

OPENHEARTEDNESSopenheartedness n. Alternative form of open-heartedness.
open-heartedness n. Frankness; candor and sincerity.
open-heartedness n. Generosity and kindness.
OPENMOUTHEDNESSOPENMOUTHEDNESS n. the state of being openmouthed.
OPERATIONALISMSoperationalisms n. Plural of operationalism.
OPERATIONALISM n. the theory that defines scientific concepts by means of the operations used to prove or determine them, also OPERATIONISM.
OPERATIONALISTSoperationalists n. Plural of operationalist.
OPERATIONALIST n. an exponent of operationalism.
OPERATIVENESSESoperativenesses n. Plural of operativeness.
OPERATIVENESS n. OPERATIVE, having the power of operating or acting.

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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See this list for:

  • English Wiktionary: 38 words
  • Scrabble in French: 1 word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 2 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 6 words


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