exhilarate.transitive verb
inflected form(s).exhilarated; exhilarating
to make cheerful; enliven; excite; refresh; stimulate
exhilaratingly.adverb
exhilarative.adjective
exhilaration.noun
the state of being stimulated, refreshed, or elated

exon.noun
Genetics – a nucleotide-sequence in DNA that carries the code for the final messenger RNA-molecule and thus defines the amino acid-sequence during protein-synthesis. 
exonic.adjective

expediency.noun.expediencies.plural
appropriateness to the purpose at hand; fitness; adherence to self serving means

expiate.verb
inflected form(s).expiated, expiating
to extinguish the guilt incurred; to make amends for (permission to expiate their offences) 
intransitive verb senses.to make expiation 
expiator.noun
expiable.adjective

explicit.adjective
fully revealed or expressed without vagueness, implication, or ambiguity; leaving no question as to meaning or intent (explicit instructions); clearly defined; fully developed or formulated (an explicit plan) (an explicit notion of our objective); unambiguous in expression (was very explicit on how we are to behave); open in the depiction of nudity or sexuality (explicit books and films)
explicit implies such verbal plainness and distinctness that there is no need for inference and no room for difficulty in understanding (explicit instructions) compare-implicit
explicitly.adverb
explicitness.noun
synonyms.definite, express, specific
definite stresses precise, clear statement or arrangement that leaves no doubt or indecision (the law is definite in such cases) 
express implies both explicitness and direct and positive utterance (her express wishes) 
specific mean perfectly clear in meaning; applies to what is precisely and fully treated in detail or particular (two specific criticisms)

exploit, exploited, exploiting, exploits.transitive verb
to make unethical use of for one's own advantage or profit; to turn selfishly or unfairly to one's own account
exploitation.noun
exploitative.adjective
exploiter.noun
a person who exploits; to exploit
exploit.noun
an act remarkable for brilliance or daring; bold deed; an act or deed, especially a brilliant or heroic one; a feat; to employ to the greatest possible advantage (exploit one's talents); to make use of selfishly or unethically (a country that exploited peasant labor); manipulate; to advertise; promote
exploitability.noun
exploitable, exploitative.or.exploitive.adjectives
exploitativey.or.exploitively.adverbs

exponent, exponential.adjectives
a mathematical rule for a step-by-step procedure (an algorithm) showing how many times a figure is to be multiplied by itself, and applied recursively – e.g. b3 = b X b X b
exponentially.adverb

exposition.noun
a setting forth of meaning or intent; a statement or rhetorical.discourse.intended to give information about or an explanation of difficult material; to expound
expositor.noun
a person that sets forth or explains
expositive, expository.adjectives

expostulate.verb
discuss, examine
intransitive verb senses.to reason earnestly with a person for purposes of dissuasion or remonstrance
expostulation.noun
an act or an instance of expostulating
expostulatory.adjective

expurgate, expurgated, expurgating, expurgates.transitive verb
to cleanse; to remove erroneous, vulgar, obscene, or otherwise objectionable material from (a book, for example) 
expurgation, expurgator.nouns

exquisite.adjective
carefully done or elaborately made; very beautiful or lovely, especially in a delicate or carefully wrought way
exquisite.noun
one who is excessively.fastidious in dress, manners, or taste
exquisitely.adverb
exquisiteness.noun

extant.adjective
to be in existence; standing out or above; to stand out; currently or actually existing; not destroyed or lost

extenuate, extenuating, extenuated.verbs
to lessen the seriousness of by providing partial excuses
extenuation, extenuator.nouns

extort, extorted, extorting, extorts.transitive verbs
to obtain from another by coercion or intimidation
extorter.noun
extortive.adjective
synonyms.educe; force

extortion.noun
the act or an instance of extorting; illegal use of one's official position or powers to obtain property, funds, or patronage; an excessive or exorbitant charge; something extorted
extortionary.adjective
extortionist.or.extortioner

entice, enticed, enticing, entices.transitive verbs
to attract by arousing hope or desire; lure.(the promise of higher pay enticed me into the new job)
enticement, enticer.nouns
enticingly.adverb

eugenics.noun
the study of hereditary improvement of the human race by controlled selective breeding

eugenicist.also.eugenist.noun
an advocate of or a specialist in eugenics

extrinsic.adjective
not forming an essential or inherent part of a thing; extraneous; originating from the outside; external
extrinsically.adverb

ensign.noun
a national flag displayed on ships and aircraft, often with the special insignia

effector.noun
a muscle, a gland, or an organ capable of responding to a stimulus, especially a nerve impulse; a nerve ending that carries impulses to a muscle, a gland, or an organ and activates muscle contraction or glandular secretion

efferent.adjective
directed away from a central organ or section; carrying impulses from the central nervous system to an effector
efferent.noun
an efferent organ or body part, such as a blood vessel
efferently.adverb