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List of 13-letter words containing

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There are 4 thirteen-letter words containing A, E, 2F, 2I and U

EFFICACIOUSLYefficaciously adv. In an efficacious manner.
EFFICACIOUS adv. having the power to produce a desired effect.
EFFIGURATIONSEFFIGURATION n. an elaborate, detailed description of an object or an event.
INEFFICACIOUSinefficacious adj. Incapable of having the intended consequence.
inefficacious adj. Not effective.
INEFFICACIOUS adj. lacking the power to produce a desired effect.
UNFALSIFIABLEunfalsifiable adj. (Of a statement or argument) Not able to be proven false, but not necessarily true.
unfalsifiable n. A statement or argument that cannot be proven false, but is not necessarily true.
UNFALSIFIABLE adj. not capable of being proved false.

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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