Foreign Language phrases used in english starting with 'D' & 'E'

Decolletage The neckline or top of a dress cut low so as to bear the neck and shoulders thereby revealing cleavage.

De facto Existing or being such in actual fact though not by legal establishment or official recognition.

De jure By right or legal establishment.

Déjà vu (Already seen) The illusion that one has previously had an experience that is actually new to one.
Delirium tremens A violent delirium with hallucinations resulting chiefly from excessive drinking.
De marche A line of action; move or countermove.

Denouement The outcome, solution,or unraveling of a plot in a drama or story; any final revelation or outcome.

De profundis a heartfelt cry of appeal expressing one's deepest feelings of sorrow or anguish.

Détente A lessing of tension or hostilities between nations through treaties and trade agreements.

De rigueur Required by custom or fashion; indispensable

Deus ex machina In ancient Greek and Roman plays, a deity brought in by stage machinery to intervene in the action.  Deus ex Machina is now the phrase used to describe any situation where something unexpected or implausible is brought in to the story line to resolve situations or disentangle a plot.

Dolce vita (Sweet life) A casual way of life.

Doppelganger In fiction and folklore, a doppelgänger , literally "double-goer",is a look-alike or double of a living person, sometimes portrayed as a paranormal phenomenon, and in some traditions as a harbinger of bad luck

Double-entendre a word or phrase open to two interpretations, one of which is usually risqué or indecent

Enfranchise give the right to vote to.free (a slave). 

Entourage a group of people attending or surrounding an important person.

E pluribus unum Out of many, one. The motto of the U.S.

Esprit de corps a feeling of pride and mutual loyalty shared by the members of a group.

Et alii (et al.) And others.

Et cetera (etc.) And others; and the like; and the rest; and so forth. Note: Using etc. in formal writing is inappropriate. In general, you should rewrite to avoid its use and never ever write "and etc."
Etceteras Additional things; customary extras.
Et sequens (et seq.) And following.
Ex cathedra With the authority that comes from one’s rank or office.
Exempli gratia (e.g.) For example.
Ex officio By virtue of one’s office or position.
Ex post facto Done or made afterwards, especially when having retroactive effect.
Extempore Without preparation; offhand.