[uh-lahyd, al-ahyd]
joined by treaty, agreement, or common cause: allied nations.
related; kindred: allied species.
(initial capital letter) of or pertaining to the Allies.

1250–1300; Middle English; see ally, -ed2

nonallied, adjective
preallied, adjective
unallied, adjective
well-allied, adjective

2. akin. Unabridged


[v. uh-lahy; n. al-ahy, uh-lahy]
verb (used with object), allied, allying.
to unite formally, as by treaty, league, marriage, or the like (usually followed by with or to ): Russia allied itself to France.
to associate or connect by some mutual relationship, as resemblance or friendship.
verb (used without object), allied, allying.
to enter into an alliance; join; unite.
noun, plural allies.
a person, group, or nation that is associated with another or others for some common cause or purpose: Canada and the United States were allies in World War II.
Biology. a plant, animal, or other organism bearing an evolutionary relationship to another, often as a member of the same family: The squash is an ally of the watermelon.
a person who associates or cooperates with another; supporter.

1250–1300; Middle English alien < Anglo-French al(l)ier, aillaier, Old French alier < Latin alligāre to bind to. See alloy

alliable, adjective
preally, noun, plural preallies.
preally, verb, preallied, preallying.

allay, alley, alloy, ally (see synonym study at allay).

1. unify, join, combine, wed. 4. partner, confederate. 6. friend, aide, accomplice, accessory, assistant, abettor; colleague, coadjutor, auxiliary, helper.

4, 6. enemy, foe, adversary. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
allied (əˈlaɪd, ˈælaɪd)
1.  joined, as by treaty, agreement, or marriage; united
2.  of the same type or class; related

Allied (ˈælaɪd)
of or relating to the Allies

vb (usually foll by to or with) , -lies, -lying, -lied
1.  to unite or be united, esp formally, as by treaty, confederation, or marriage
2.  (tr; usually passive) to connect or be related, as through being similar or compatible
n , -lies, -lying, -lied, -lies
3.  a country, person, or group allied with another
4.  a plant, animal, substance, etc, closely related to another in characteristics or form
[C14: from Old French alier to join, from Latin alligāre to bind to, from ligāre to bind]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1300, pp. adj. from ally (q.v.). Originally of kindred; in ref. to league or formal treaty, it is first recorded late 14c.

c.1300, from O.Fr. alier "combine, unite," from a differentiated stem of aleier (source of alloy), from L. alligare "bind to" (see alloy). The noun is c.1600 in the sense of "one united with another by treaty or league," from the verb.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
There are plenty of highly qualified scientists who are not on grants or allied
  to big business who doubt the majority view.
He gestured toward rubble surrounding a crater-a testimonial to the pinpoint
  accuracy of allied bombing.
It concludes that behavioral modernity and allied concepts have no further
  value to human origins research.
The primary teaching responsibilities will include teaching general chemistry
  and allied health chemistry lecture and lab courses.
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