The initial idioms of the letter E

empty nest syndrome	empty out
empty promise	empty suit
empty the tank	empty threat
Empty vessels make most noise	Empty vessels make the most sound
empty-nesters	en
en masse	en route
enable to do	enamel
enamored of	encase in
enchant with	enchilada
enclose	enclose in
enclosed please find...	encompass in
encourage	encourage in
encourage to do	encroach on
encumber with	walking encyclopedia
end	end (something) on a high note