# antithetical

/ˌæntəˈθɛtɪkəɫ/ (US) · /ˌæntɪθˈɛtɪkəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/antithetical
Updated: 2026-10-18

## Definition

completely opposite to something else in ideas, values, or character. You use it when two things cannot work well together.

For teachers: directly opposed in nature, character, or meaning, implying mutual incompatibility.

## Examples

- His quiet habits are antithetical to her love of parties.
- The company's focus on fast profit is antithetical to its promise of long-term care for the environment.
- Her belief in slow, careful work remains antithetical to a culture that rewards speed above depth and reflection.

## Synonyms

opposite, contrary, incompatible

## Antonyms

compatible

## Usage notes

- Typically followed by 'to' before the thing opposed.

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