English Reference
adjective · noun

contradictory

adj. · n.
US /ˌkɑntɹəˈdɪktɝi/ UK /kˌɒntɹədˈɪktəɹˌi/ con·tra·dic·to·ry UK spelling contradictories

  1. 01 B2 Upper Intermediate

    adj.describes statements, ideas, or pieces of evidence that say the opposite of each other.

    adj.describes two or more statements or ideas that are mutually exclusive, such that if one is true, the other must be false.

    Simple

    The two witnesses gave contradictory accounts of the accident, so the police were confused.

    In context

    The study produced contradictory results, with one data set suggesting a positive correlation while the other indicated a significant decline.

  2. 02 C1 Advanced Formal

    adj.describes a person who often disagrees with others or says the opposite just to be difficult.

    adj.describes a disposition or behaviour characterised by a tendency to oppose or argue against others.

    Simple

    He was in a contradictory mood and disagreed with every suggestion I made.

    In context

    Her contradictory nature often stalled committee progress, as she felt compelled to challenge even the most minor procedural consensus.

  3. 03 C2 Proficiency AcademicTechnical Law

    n.one of two ideas or statements that cannot both be true at the same time.

    n.either of a pair of propositions that are so related that one must be true and the other false.

    Simple

    In logic, 'all birds fly' and 'some birds do not fly' are contradictories.

    In context

    The legal team struggled to reconcile the contradictories within the defendant's testimony before the trial commenced.

Usage apparently contradictory

They may have problems remembering what happened, or their memories may be jumbled or even contradictory.

The Conversation· 19 Aug 2026

Paleoanthropologist Daniel Lieberman talks about diets he's tested, and contradictory information about what's healthy to eat and what's not.

NPR· 17 Aug 2026

Borrowed from Late Latin contradictorius, from Latin contradico. Equivalent to contradict + -ory.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin contradico
Level B2 · Upper Intermediate
Frequency Frequent
Updated