adamantine
/ˌædəˈmæntaɪn/
"adamantine" is a 10-letter English headword indexed on PlainSpell.
The verdict
“adamantine” is an uncommon English word, ranked #94,486 in English word frequency and used as an adjective.
- #94,486
- frequency rank, English
- 10
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Synonym of adamant.
| Property | Value |
|---|---|
| Headword | adamantine |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˌædəˈmæntaɪn/ |
| Letters | 10 |
| Frequency rank | #94,486 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “adamantine” sits in English frequency
Spelling & Dictionary Insight
The English entry for adamantine is 10 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˌædəˈmæntaɪn/. Corpus data places it at rank #94,486 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 6 distinct senses for this headword, so context determines which meaning a reader should apply.
We couldn't generate a plausible misspelling set for adamantine, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From Middle English adamantine, adamantyne, adamauntyn (“(adjective) of adamant; (noun) adamant”), from Anglo-Norman adamantin and Middle French adamantin (“of or resembling adamant or diamond”) (modern French adamantin), and from its etymon Latin adamantin… The correct English form is adamantine, spelled A-D-A-M-A-N-T-I-N-E.
Definition
- 1Synonym of adamant.
- 2Synonym of adamant.
- 3Synonym of adamant.
- 4Synonym of adamant.
- 5Synonym of adamant.
- 6Like diamond in lustre; bright, lustrous, shiny; also, of a lustre: like that of a mineral with a high refractive index such as diamond.
Etymology
From Middle English adamantine, adamantyne, adamauntyn (“(adjective) of adamant; (noun) adamant”), from Anglo-Norman adamantin and Middle French adamantin (“of or resembling adamant or diamond”) (modern French adamantin), and from its etymon Latin adamantinus (“adamantine”), from Ancient Greek ἀδᾰμάντῐνος (adămántĭnos, “hard as adamant; made of steel”), from ᾰ̓δᾰμᾰντ- (ădămănt-) (a stem of ἀδάμᾱς (adámās, “the hardest metal (probably steel); diamond”), possibly originally Semitic) + -ῐνος (-ĭnos, suffix meaning ‘made of’ forming adjectives). By surface analysis, adamant + -ine (suffix meaning ‘of or pertaining to’ forming adjectives). Etymology 1 sense 1.2.4 (“having the quality of attracting or drawing”) and etymology 1 sense 2 (“like diamond in lustre; etc.”) refer to adamant (“(archaic) lodestone; (historical, poetic) diamond”).
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “adamantine”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-D-A-M-A-N-T-I-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˌædəˈmæntaɪn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.