reciprocal

/ri'siprəkəl/
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reciprocal

The two friends have a reciprocal agreement to help each other with homework.

Definition
  1. Adjective:

    • Mutual; given, felt, or done in return: Describes a relationship or action where two parties feel or do the same thing toward each other. It implies a balanced exchange.
    • Inverse; opposite in nature or effect: Describes something that is the direct opposite or counterpart of something else.
    • (Mathematics) Relating to the multiplicative inverse: Describes the relationship between two numbers whose product is 1.
  2. Noun:

    • (Mathematics) Multiplicative inverse: A number which, when multiplied by a given number, results in a product of 1.
    • A counterpart; something that has a reciprocal relation: Something that is the direct opposite or correlative of something else.
Usage Examples
  • Adjective:

    • Their friendship is based on reciprocal trust and admiration. (They trust and admire each other equally.)
    • The two countries signed a reciprocal agreement to reduce tariffs. (Each country agreed to do the same for the other.)
    • In this equation, the reciprocal relationship is clearly defined.
  • Noun:

    • The reciprocal of 5 is 1/5 (or 0.2).
    • Peace and war are not opposites; they are reciprocals in the cycle of human history.
Advanced Usage
  • "Reciprocal pronoun": In grammar, a pronoun that expresses a mutual relationship (e.g., "each other," "one another").
    • The two teams helped each other after the game. ("Each other" is a reciprocal pronoun.)
  • "Reciprocal altruism": A biological concept where an organism acts to benefit another with the expectation of a future return benefit.
    • The theory of reciprocal altruism explains some cooperative behaviors in animals.
Variants and Related Words
  • Reciprocity (n): The practice of exchanging things with others for mutual benefit.
    • The treaty established a framework for trade reciprocity.
  • Reciprocally (adv): In a reciprocal manner; mutually.
    • The feelings were reciprocally held.
  • Reciprocate (v): To respond to (a gesture or action) by making a corresponding one.
    • He smiled, and she reciprocated.
Synonyms
  • Mutual: Shared or felt by two or more parties.
  • Corresponding: Having a similar relationship; equivalent.
  • Complementary: Combining in such a way as to enhance or emphasize each other's qualities.
  • Inverse: Opposite in position, order, or effect.
Antonyms
  • One-sided: Favouring one party or side more than another; not mutual.
  • Unilateral: Performed by or affecting only one person, group, or country involved in a situation.
Related Phrases / Idioms
  • Reciprocal arrangement/agreement/treaty: A formal agreement where each party grants the same rights or privileges to the other.
    • The universities have a reciprocal arrangement for student exchanges.
  • In reciprocal fashion/manner: Done in a way that returns or mirrors an action.
    • The concessions were offered in a reciprocal fashion.
reciprocal

The two friends have a reciprocal agreement to help each other with homework.

Adjective
  1. of or relating to the multiplicative inverse of a quantity or function
    • the reciprocal ratio of a:b is b:a
  2. concerning each of two or more persons or things; especially given or done in return
    • reciprocal aid
    • reciprocal trade
    • mutual respect
    • reciprocal privileges at other clubs
Noun
  1. hybridization involving a pair of crosses that reverse the sexes associated with each genotype
  2. (mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2; the multiplicative inverse of 7 is 1/7
  3. something (a term or expression or concept) that has a reciprocal relation to something else
    • risk is the reciprocal of safety