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 There are 8 thirteen-letter words containing B, E, I, P, T, U and Y| IMPERTURBABLY | • imperturbably adv. In an imperturbable manner; calmly. • IMPERTURBABLE adv. marked by extreme calm, impassivity, and steadiness.
 |  | INSUSCEPTIBLY | • insusceptibly adv. In an insusceptible manner. • INSUSCEPTIBLE adv. not susceptible, also INSUSCEPTIVE.
 |  | PERDURABILITY | • perdurability n. The state of being perdurable. • PERDURABILITY n. the state of being perdurable.
 |  | PERMUTABILITY | • permutability n. (Uncountable) The condition of being permutable. • permutability n. (Countable) The extent to which something is permutable.
 • PERMUTABILITY n. the quality of being permutable.
 |  | POLYBUTADIENE | • polybutadiene n. (Organic chemistry) A polymer of butadiene, used to make synthetic rubber. • POLYBUTADIENE n. a synthetic rubber that has a high resistance to wear and is used esp. in the manufacture of tires.
 |  | SUBSPECIALITY | • subspeciality n. (UK) Alternative spelling of subspecialty. • SUBSPECIALITY n. a subordinate speciality, also SUBSPECIALTY.
 |  | SUPERLOBBYIST | • superlobbyist n. (Politics) An extremely skilled or powerful lobbyist. • SUPERLOBBYIST n. an exceptionally effective lobbyist.
 |  | UNPREDICTABLY | • unpredictably adv. In an unpredictable way. • UNPREDICTABLE adv. that cannot be predicted.
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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: 48 wordsScrabble in French: 2 wordsScrabble in Spanish: no wordScrabble in Italian: no wordScrabble in German: no wordScrabble in Romanian: no word
 
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