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 There are 7 thirteen-letter words containing B, 2I, N, O, P and 2S| INCOMPOSSIBLE | • incompossible adj. (Rare) Not capable of joint existence; incompatible; inconsistent. • INCOMPOSSIBLE adj. incapable of coexisting.
 |  | IRRESPONSIBLE | • irresponsible adj. (Now rare) Not responsible; exempt from legal responsibility, not to be held accountable. • irresponsible adj. Lacking a sense of responsibility; performed or acting as though without responsibility; negligent.
 • irresponsible n. Someone who is not responsible.
 |  | IRRESPONSIBLY | • irresponsibly adv. In an irresponsible manner; so as to be irresponsible. • IRRESPONSIBLE adv. not responsible.
 |  | PROBOSCIDIANS | • proboscidians n. Plural of proboscidian. • PROBOSCIDIAN n. any of an order of large mammals comprising the elephants and extinct related forms, also PROBOSCIDEAN.
 |  | SUBOPTIMISING | • SUBOPTIMISE v. to optimize to an inferior degree, also SUBOPTIMIZE. |  | SUBSCRIPTIONS | • subscriptions n. Plural of subscription. • SUBSCRIPTION n. an autograph signature.
 |  | VIBRAPHONISTS | • vibraphonists n. Plural of vibraphonist. • VIBRAPHONIST n. one who plays the vibraphone.
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 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.
 
 See this list for:English Wiktionary: 41 wordsScrabble in French: 11 wordsScrabble in Spanish: 15 wordsScrabble in Italian: 2 wordsScrabble in German: no wordScrabble in Romanian: 5 words
 
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