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List of 12-letter words containing

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There are 15 twelve-letter words containing 2E, 2F, I, S and T

COEFFICIENTScoefficients n. Plural of coefficient.
coëfficients n. Plural of coëfficient.
COEFFICIENT n. any of the factors of a product considered in relation to a specific factor.
EFFICACITIESefficacities n. Plural of efficacity.
EFFICACITY n. the state of being efficacious.
EFFRONTERIESeffronteries n. Plural of effrontery.
EFFRONTERY n. shameless boldness; presumptuousness.
EFFUSIOMETEReffusiometer n. A device that measures the rate of effusion of a gas.
EFFUSIOMETER n. an instrument for comparing the molecular weights of gases.
EXSUFFLICATEexsufflicate adj. Empty, inflated, frivolous.
EXSUFFLICATE adj. (Shakespeare) puffed out, trifling.
FEEDINGSTUFFfeedingstuff n. Any foodstuff used to feed livestock.
feeding␣stuff n. Alternative form of feedingstuff.
FEEDINGSTUFF n. stuff used to feed animals.
FIREFIGHTERSfirefighters n. Plural of firefighter.
FIREFIGHTER n. a person who fights fires.
FITFULNESSESfitfulnesses n. Plural of fitfulness.
FITFULNESS n. the quality of being fitful.
INDIFFERENTSindifferents n. Plural of indifferent.
INDIFFERENT n. a person who is indifferent.
INEFFICIENTSinefficients n. Plural of inefficient.
INEFFICIENT n. one who is not efficient.
INTERDIFFUSEinterdiffuse v. To mutually diffuse.
INTERDIFFUSE v. to diffuse between.
INTEROFFICESinteroffices v. Third-person singular simple present indicative form of interoffice.
STUFFINESSESstuffinesses n. Plural of stuffiness.
STUFFINESS n. the state of being stuffy.
TUFTAFFETIESTUFTAFFETY n. (archaic) a taffeta with a tufted pile, also TUFFTAFFETA, TUFFTAFFETY, TUFTAFFETA.
WHIFFLETREESwhiffletrees n. Plural of whiffletree.
WHIFFLETREE n. the crosspiece of a carriage to which harnesses are attached, also SINGLETREE, SWINGLETREE, SWINGTREE, WHIPPLETREE.

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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