| COEFFICIENTS | • coefficients 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. |
| EFFICACITIES | • efficacities n. Plural of efficacity. • EFFICACITY n. the state of being efficacious. |
| EFFRONTERIES | • effronteries n. Plural of effrontery. • EFFRONTERY n. shameless boldness; presumptuousness. |
| EFFUSIOMETER | • effusiometer n. A device that measures the rate of effusion of a gas. • EFFUSIOMETER n. an instrument for comparing the molecular weights of gases. |
| EXSUFFLICATE | • exsufflicate adj. Empty, inflated, frivolous. • EXSUFFLICATE adj. (Shakespeare) puffed out, trifling. |
| FEEDINGSTUFF | • feedingstuff n. Any foodstuff used to feed livestock. • feeding␣stuff n. Alternative form of feedingstuff. • FEEDINGSTUFF n. stuff used to feed animals. |
| FIREFIGHTERS | • firefighters n. Plural of firefighter. • FIREFIGHTER n. a person who fights fires. |
| FITFULNESSES | • fitfulnesses n. Plural of fitfulness. • FITFULNESS n. the quality of being fitful. |
| INDIFFERENTS | • indifferents n. Plural of indifferent. • INDIFFERENT n. a person who is indifferent. |
| INEFFICIENTS | • inefficients n. Plural of inefficient. • INEFFICIENT n. one who is not efficient. |
| INTERDIFFUSE | • interdiffuse v. To mutually diffuse. • INTERDIFFUSE v. to diffuse between. |
| INTEROFFICES | • interoffices v. Third-person singular simple present indicative form of interoffice. |
| STUFFINESSES | • stuffinesses n. Plural of stuffiness. • STUFFINESS n. the state of being stuffy. |
| TUFTAFFETIES | • TUFTAFFETY n. (archaic) a taffeta with a tufted pile, also TUFFTAFFETA, TUFFTAFFETY, TUFTAFFETA. |
| WHIFFLETREES | • whiffletrees n. Plural of whiffletree. • WHIFFLETREE n. the crosspiece of a carriage to which harnesses are attached, also SINGLETREE, SWINGLETREE, SWINGTREE, WHIPPLETREE. |