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ally

AL-y/ˈæl.aɪ/

Pluralallies

Verballies, allying, allied

14 meanings of ally

Practice

  1. 1
    nouncountable
    A person, group, or state joined to another by treaty for a shared aim, especially a military or political one.

    France remained a steadfast ally throughout the long campaign.

    The two nations became allies after signing the defense pact.

    Similarpartner

    Oppositeenemy, adversary, foe

  2. 2
    nouncountable
    A friend or associate, or someone who gives another person help or cooperates with them.

    Throughout the dispute, she proved a reliable ally to the junior staff.

    He counted the librarian among his closest allies on campus.

    Similarsupporter, friend, associate, partner, helper

    Oppositeenemy, opponent, adversary

    Note

    The noun has two parents: the English verb, and Anglo-Norman allié, which already meant associate, supporter, friend and relative. That double origin explains why the noun can mean a helper as easily as a treaty partner or a kinsman. In this personal sense the scale is small: Washington Irving's "trusty ally" carries a blunderbuss, and Joyce's young Stephen "became the ally of a boy" and founded a gang with him.

  3. 3
    nouncountable
    A person or organization that supports a demographic group facing discrimination without belonging to it; specifically, someone outside the LGBT+ community who backs it.

    The company positioned itself as an ally of marginalized communities.

    Many straight allies attended the rally in solidarity.

    Similarsupporter, advocate, champion

    Note

    A specialized use of the helper sense, defined by the supporter's position outside the group rather than by the help itself. In LGBTQ usage, it names supporters who are not LGBT+ themselves. It commonly takes to or of to name the group supported (a better ally to the disabled, an ally of marginalized communities).

  4. 4
    verbintransitive
    To enter into an alliance or unite with another for a common purpose.

    Several nations chose to ally against the common threat.

    The two factions allied to overthrow the regime.

    Similarunite, combine, join

    Oppositedivide, split

    Note

    Here the verb stands alone, and with introduces the partner. Gilbert Burnet (1673) has Constantine allying with Licinius and sealing the bond by giving him his sister in marriage. Bulwer-Lytton's Athens has a conqueror offer pardon: "If they will ally with me, rebuild the temples I have burnt." The closest idiomatic equivalent is to make common cause, which also needs no object.

  5. 5
    verbtransitive
    To unite or form a connection between people or things, as families through marriage or states through treaty.

    A single treaty can ally nations that once fought bitterly.

    Centuries of diplomacy allied the two kingdoms through repeated marriages.

    Similarunite, join, bind, link

    Oppositedivide, separate

    Note

    Marriage and treaty sit side by side in this sense because Middle English allien already meant both forming an alliance and marrying or becoming related. John Lightfoot's chronicle of 1634 shows the two at once: by wedding Pharaoh's daughter, Solomon "allieth that potent King to him." The usual pattern is to ally one party to another, and Shakespeare favors the passive form, allied to.

  6. 6
    nounfigurativelycountable
    A person, group, or concept regarded as a helper, auxiliary, or supporter to another.

    Time proved an unexpected ally as public opinion slowly shifted.

    Surprise and darkness were the raiders' chief allies.

    Similarfriend, asset, aid, helper

    Oppositeenemy

  7. 7
    verbreflexivetransitive
    To join or unite oneself with, or against, another person, group, or thing.

    Smaller firms often ally themselves with a dominant partner to survive.

    The duke allied himself with the crown against the rebels.

    Similaralign, associate, affiliate

    Oppositedissociate, distance

    Note

    The reflexive pronoun is essential here: a person or group allies himself, herself or itself, and the preposition names the other side. In Richardson's Pamela (1742), titled families "have ally'd themselves to Trade," meaning they married into money, so the family sense of uniting by marriage is still close by. Macaulay's Halifax "allied himself closely with the Whigs" shows the political use. Without the pronoun, the result is the intransitive verb.

  8. 8
    verbtransitive
    To connect or relate something to another by similarity in features or nature.

    Linguists ally those dialects with a single ancestral tongue.

    The critic allied the painting to earlier Flemish work.

    Similarassociate, link, connect, relate

    Note

    It usually appears as a participle, with an adverb that measures how close the likeness is: well allied, near allied, nearest allied. Dryden's Absalom and Achitophel (1681) gives the classic line, "Great wits are sure to madness near allied," and Pope's An Essay on Man (1733) follows the same pattern with virtue "nearest to our vice allied." The adverb sets the degree of kinship, and to introduces the thing it resembles.

  9. 9
    nouncountable
    A thing considered akin to another because the two share features or a common nature.

    Botanists treat the herb as a close ally of mint.

    Chemically the two minerals are allies, differing only in trace elements.

    Similarrelative, cousin, relation

    Note

    The noun partner of the "related by nature" verb, and it shares the verb's habit of measuring closeness. In Drayton, the violet is the pansy's "neere Alye." Thomas Stanley calls medicine an art's "nearest ally." William Derham moves from the mouth to "its near Allie the Stomach." Near and nearest are its usual companions, and the biologist's use of the word grows from this sense.

  10. 10
    nouncountable
    An organism related to another through common evolutionary origin; specifically, a species closely related to another, usually within the same family.

    The cultivated apple and its wild ally share many traits.

    Taxonomists grouped the new species with its nearest allies.

    Similarrelative

    Note

    Taxonomists use the plural in a set formula that extends a familiar name to cover its relatives: "cranes and their allies," "raccoons and their allies." The phrase works as an informal group label, often explaining a formal name such as Procyonids. Here the kinship is evolutionary descent, usually within one family, rather than the loose resemblance of the general "related thing" sense.

Practice

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Origins

Meanings 4–5, 7–8

From Middle English allien (to form an alliance, join, unite), borrowed through Anglo-Norman and Old French alier (to join together, unite, or alloy metals), from Latin alligare, from ad- (an intensifying prefix) plus ligo (to bind or tie), tracing back to Proto-Indo-European *leyǵ- (to bind, tie). It is a doublet of allay, alligate, alloy, and ligament.

Meanings 1–3, 6, 9–13

From Middle English allie, probably formed partly from the verb allien (see etymology 1) and partly from Anglo-Norman and Old French allié (an associate, supporter, or state united with another by treaty), which was a noun use of the past participle of the verb alier.