become an ally or associate, as by a treaty or marriage; " He allied himself with the Communists"

a friendly nation

an associate who provides assistance; " he's a good ally in fight"; " they were friends of the workers"

To connect or form a relation between by similitude, resemblance, friendship, or love.

A relative; a kinsman.

Anything associated with another as a helper; an auxiliary.

Anything akin to another by structure, etc.

See Alley, a marble or taw.

To unite, or form a connection between, as between families by marriage, or between princes and states by treaty, league, or confederacy; - often followed by to or with.

One united to another by treaty or league; - usually applied to sovereigns or states; a confederate.

To unite by marriage, treaty, league, or confederacy; bind or connect by friendship or resemblance.

One united or associated by these means.

Allied.

Allying.

To form a relation by marriage, friendship, treaty, or resemblance:- pa. p. allied.

A confederate: a prince or state united by treaty or league:- pl. ALLIES.

A confederate; a friend.

To unite by marriage, compact, or friendship.

To unite by relationship, treaty, or marriage.

A state or ruler leagued with another by treaty; an associate; a kinsman.

One that is allied; a confederate.

To unite by marriage or treaty; to connect, as by similitude or friendship.

To unite, as families by marriage; to bind together in friendship, as states with states.

The Spartans that were present hung down their heads, as conscious of the wrong they had done to their ally. – Plutarch-Lives-of-the-noble-Grecians-and-Romans by Clough, Arthur Hugh

If I am sure of my great Ally, my heart will not be troubled, neither will it be afraid. – My Daily Meditation for the Circling Year by John Henry Jowett

Uncle Tom didn't seem in the least haste now, and ever so many minutes ago he had said to her, " Well, good- by, Ally!" – A Flock of Girls and Boys by Nora Perry

She herself would be his best ally. – A Hungarian Nabob by Maurus Jókai

But remember, if he is a man whom I can think worthy of you, you may count upon me as an ally. – The Cardinal's Snuff-Box by Henry Harland

She seized on every new ally and fitted him into her scheme. – The Great Miss Driver by Anthony Hope

After his first foul act of treason against Serbia, his former ally, whom he took in the rear without any declaration of war, he endeavoured, it will be remembered, to throw upon his ministers the blame of a crime which was threatening to turn out badly. – War by Pierre Loti

From being England's enemy, France would become her ally. – Yankee Ships and Yankee Sailors: Tales of 1812 by James Barnes

Yabolo, as anxious as Bakahenzie, became his ally in urging that this be done. – Witch-Doctors by Charles Beadle

Cartoner had simply forced him to become his ally, and had even indicated the line of conduct he was to pursue. – The Vultures by Henry Seton Merriman

The people of the fort saw him hurried more like a prisoner than an ally towards D'Aulnay's camp, his wife beside him. – The Lady of Fort St. John by Mary Hartwell Catherwood

But he would have to be separated for some time from his ally, cut off from giving him any hints. – Red Men and White by Owen Wister

Scott explained how he had pretended to ally himself with Frank's foes, and thus had heard the plots against the boy. – Frank Merriwell's Races by Burt L. Standish

In less than five minutes, she conquered old Nan, and secured her as an ally for ever. – Hetty's Strange History by Anonymous

Near him on the right, his Onondaga converts were gathered, and he frequently looked at them as he told the fifty sachems that France, the greatest and strongest son of Holy Church, was their best friend, and their fitting ally. – The Hunters of the Hills by Joseph Altsheler

Don't you think, Tom, Ally pulled out mamma's bag, and held it right up before her! – The May Flower, and Miscellaneous Writings by Harriet Beecher Stowe

Some other information Bertram received from his most faithful ally. – The Bertrams by Anthony Trollope