List of 11-letter words containing

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There are 5 eleven-letter words containing EFFI

COEFFICIENT	• coefficient adj. Cooperating. • coefficient n. (Mathematics) A constant by which an algebraic term is multiplied. • coefficient n. A number, value, or item that serves as a measure of some property or characteristic.
EFFICACIOUS	• efficacious adj. (Formal) Effective; possessing efficacy. • EFFICACIOUS adj. having the power to produce a desired effect.
EFFICIENCES	• efficiences n. Plural of efficience. • EFFICIENCE n. (archaic) efficiency, also EFFICIENCY.
EFFICIENTLY	• efficiently adv. In an efficient manner. • EFFICIENT adv. capable of doing what may be required.
INEFFICIENT	• inefficient adj. Not efficient; not producing the effect intended or desired; inefficacious. • inefficient adj. Incapable of, or indisposed to, effective action; habitually slack or unproductive; effecting little or nothing. • inefficient n. A person who cannot or does not work efficiently.

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: 16 words
Scrabble in French: 23 words
Scrabble in Spanish: no word
Scrabble in Italian: 20 words
Scrabble in German: no word
Scrabble in Romanian: no word

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