[ verb uh-lahy; noun al-ahy, uh-lahy ]
/ verb əˈlaɪ; noun ˈæl aɪ, əˈlaɪ /
verb (used with object), al·lied, al·ly·ing.
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), al·lied, al·ly·ing.
noun, plural al·lies.
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.
a passive or active supporter of a particular politicized or marginalized group, usually not a member of the group: the LGBT community and its straight allies; the women’s movement and its male allies.
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What does “barren” mean?
Origin of ally
First recorded in 1250–1300; Middle English alien, from Anglo-French alal(l)ierier, aillaier, Old French alier, from Latin alligāre “to bind to.” See alloy
SYNONYMS FOR ally
OTHER WORDS FROM allyal·li·a·ble, adjectivepre·al·ly, noun, plural pre·al·lies.pre·al·ly, verb, pre·al·lied, pre·al·ly·ing.
Definition for ally (2 of 2)
an adverbial suffix attached to certain adjectives with stems in -ic that have no forms ending in -ical: terrifically.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for ally
verb (əˈlaɪ) -lies, -lying or -lied (usually foll by to or with)
to unite or be united, esp formally, as by treaty, confederation, or marriage
(tr; usually passive) to connect or be related, as through being similar or compatible
noun (ˈælaɪ, əˈlaɪ) plural -lies
a country, person, or group allied with another
a plant, animal, substance, etc, closely related to another in characteristics or form
Word Origin for ally
C14: from Old French alier to join, from Latin alligāre to bind to, from ligāre to bind
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012