The initial idioms of the letter A

a man after own heart	man cave
man-eater	a man for all seasons
man-of-war	a man of few words
a man of God	a man of his word
a man of letters	a man of many parts
a man of means	a man of my kidney
a man of straw	a man of the cloth
a man of the world	a man-about-town
a man-eater	A man's got to do what a man's got to do
a man's man	a mare's nest
make mark	a marked man
a marriage made in heaven	Jill of all trades(, master of none)
a match made in heaven	a match made in hell
a matter of	matter of fact
a matter of form	a matter of life and death