Efficacy
To produce a intended effect
Ebullient
Great enthusiasm or exhilaration
Effrontery
Shameless boldness; impudence
Egress
Exit
Elegy
A poem lamenting the dead
Elitism
Pride to belonging a select group
Emulate
Imitate
Enervate
To weaken
Engender
To produce
Ennui
Boredom
Ephemeral
Short lived
Equable
Free from many changes or variations
Equanimity
Evenness of mind or temper
Equivocal
Ambiguous
Erudite
Very learned
Eschew
To keep clear of
Esoteric
Hard to understand ; known only by a few
Exculpate
To free from blame
Exigency
Urgent situation
Expatiate
To speak or write at some length
Expiation
Reparation is made
Extrapolation
To infer an unknown from something that is known
Extirpate
To root out; to eradicate