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conditional

American  
[kuhn-dish-uh-nl] / kənˈdɪʃ ə nl /

adjective

  1. imposing, containing, subject to, or depending on a condition or conditions; not absolute; made or allowed on certain terms.

    conditional acceptance.

    Synonyms:
    relative, contingent, dependent
  2. Grammar. (of a sentence, clause, mood, or word) involving or expressing a condition, as the first clause in the sentence If it rains, he won't go.

  3. Logic.

    1. (of a proposition) asserting that the existence or occurrence of one thing or event depends on the existence or occurrence of another thing or event; hypothetical.

    2. (of a syllogism) containing at least one conditional proposition as a premise.

  4. Mathematics. (of an inequality) true for only certain values of the variable, as x + 3 > 0 is only true for real numbers greater than −3.


noun

  1. Grammar.

    1. (in some languages) a mood, tense, or other category used in expressing conditions, often corresponding to an English verb phrase beginning with would, as Spanish comería “he would eat.”

    2. a sentence, clause, or word expressing a condition.

conditional British  
/ kənˈdɪʃənəl /

adjective

  1. depending on other factors; not certain

  2. grammar (of a clause, conjunction, form of a verb, or whole sentence) expressing a condition on which something else is contingent: " If he comes " is a conditional clause in the sentence " If he comes I shall go "

    1. (of an equation or inequality) true for only certain values of the variable: x ² –1 = x + 1 is a conditional equation, only true for x = 2 or –1

    2. (of an infinite series) divergent when the absolute values of the terms are considered

  3. Also: hypotheticallogic (of a proposition) consisting of two component propositions associated by the words if…then so that the proposition is false only when the antecedent is true and the consequent false. Usually written: pq or pq, where p is the antecedent, q the consequent, and → or ⊃ symbolizes implies

"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

noun

  1. grammar

    1. a conditional form of a verb

    2. a conditional clause or sentence

  2. logic a conditional proposition

"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

Other Word Forms

Derived Forms

Etymology

Origin of conditional

1350–1400; Middle English condicionel < Anglo-French, Middle French < Late Latin condiciōnālis, equivalent to condiciōn- (stem of condiciō ) condition + -ālis -al 1

Explanation

Something conditional is dependent on other factors. You might receive a conditional offer of acceptance from a college, depending on your high school graduation and your maintaining passing grades. For a clue to the meaning of conditional, look at an opposing term: unconditional surrender, which means someone surrenders and doesn't ask for anything in return. In a conditional surrender, someone will give up only if certain things happen. A conditional agreement is dependent on other factors: a company could make a conditional hire, meaning they'll hire you only if you finish your degree and take a blood test. When you see the word conditional, think "It depends."

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Vocabulary lists containing conditional

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Saint Le Fort was put down after falling at the final obstacle during the Martin Pipe Conditional Jockeys' Handicap Hurdle.

From BBC • Mar. 13, 2026

If you miss that deadline, you can still cast a ballot through the Conditional Voter Registration process — also known as same day voter registration.

From Los Angeles Times • Oct. 1, 2025

This Conditional Variational Diffusion Model produces state-of-the-art results also surpassing the m-rBCR model presented here.

From Science Daily • Nov. 19, 2024

Conditional status means they are exempt on the Korn Ferry Tour through the first reshuffle of the priority list.

From Washington Times • Apr. 25, 2023

Conditional Probability, Blackjack, and Drug Testing One needn’t be a believer in any of the standard pseudosciences to make faulty claims and invalid inferences.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos

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