adamantine

C2+ Topic:Describing Qualities

US /ˌædəˈmæntiːn/ UK /ˌædəˈmæntaɪn/ See IPA manual

Meanings

1

adj
impenetrably hard or unbreakable; resembling diamond

His adamantine resolve never wavered under pressure.

Thesaurus

Synonyms

1 adj · impenetrably hard or... unbreakable impenetrablediamantineobdurate inflexible adamant

Opposites

brittle yielding soft

Word family

Related forms adamant diamond

Etymology

From Latin adamantinus, from Ancient Greek adamantinos (ἀδαμάντινος, 'of the hardest metal'), from adamas ('unconquerable, hardest substance'), from a- ('not') + damaō ('to subdue').

adamantinus Latin ἀδάμας Ancient Greek

View etymology graph ->

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# adamantine

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** /ˌædəˈmæntiːn/
**IPA (UK):** /ˌædəˈmæntaɪn/

## Meanings
1. impenetrably hard or unbreakable; resembling diamond

## Examples
- His adamantine resolve never wavered under pressure.

## Synonyms
- unbreakable
- impenetrable
- diamantine
- obdurate
- inflexible
- adamant

## Antonyms
- brittle
- yielding
- soft

## Related Forms
- adamant
- diamond

## Roots and Affixes
- Root: adamantinus
- Root: ἀδάμας

## Etymology
From Latin adamantinus, from Ancient Greek adamantinos (ἀδαμάντινος, 'of the hardest metal'), from adamas ('unconquerable, hardest substance'), from a- ('not') + damaō ('to subdue').

## AI Etymology
Adamantine comes from Latin adamantinus, from Ancient Greek adamantinos (ἀδαμάντινος, 'of the hardest metal'), from adamas ('unconquerable, hardest substance'), from a- ('not') + damaō ('to subdue'). The historical trail runs through Latin adamantinus and Ancient Greek ἀδάμας. Morphologically, the surface form is analyzable into prefixes, suffixes, compounds, or participial endings that carry part of the history. In modern use it means impenetrably hard or unbreakable; resembling diamond. Related forms include adamant, diamond.

## Topics
- Describing Qualities

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adamantine

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