The initial idioms of the letter D

on the defensive	defer to
Hope deferred makes the heart sick	defiance
define as	Deflategate
deflect away from	defraud out of
defriend	defrosted
defuse (something)	degenerate into
degree	deign to do
delay	delegate to
delete from	Delhi belly
deliberate about	deliberate over
deliberate	in a delicate condition
delight	delight by
delight in	delight with
delighted to have you	delighted to make your acquaintance
delighted	delish