Engelske ord som starter på "ef"

eff efface efface oneself effacement effect effect of action effect of actions effect of destabilising actions effect of heat effect of heating effect of process heat effect of stabilising actions effect of temperature effect on health effect on man effect on the environment effected effective effective air flow rate effective air volume effective averaging time effective bandwidth effective base area effective beam profile effective coil diameter effective collecting area effective collision cross-section effective component effective depth of penetration effective discharge time effective duration effective field of vision effective flange width effective foundation area effective from effective grain size effective heat capacity of a zone effective height effective internal thermal capacity effective length effective length of bar effective masking level of a noise band effective mass effective multiplication factor effective noise reduction effective period effective permeability effective pressure effective protection effective roof area effective size effective span effective stiffness centre effective tensile force effective throat thickness effective throw of water effective throw range effective volume effective water content effective width of door opening effectively effectiveness effectivity effects effects of actions effects of plans effectual effectuality effectually effectualness effectuate effectuation effeminacy effeminate effeminateness effeminize effendi efferent effervesce effervescence effervescent effervescing effete efficacious efficaciously efficaciousness efficacy efficiency efficiency analysis efficiency apartment efficiency criterion efficiency factor efficiency indicator efficiency level efficiency-enhacing efficient efficient material flow efficiently effigy effloresce efflorescence efflorescent effluence effluent effluent polishing effluent polishing pond effluent seepage effluent side effluent solid efflux efflux time effort effort to excel effortful effortfulness effortl effortless effortlessly effortlessness efforts effrontery effulgence effulgent effuse effusion effusive effusively effusiveness