
1) Adamantine 2) An unbreakable substance 3) Big name in New Wave 4) British New Wave singer 5) Bullheaded 6) Dead-set 7) Determined 8) Disinclined to move 9) Emphatic 10) Far from easygoing 11) Fictional metal 12) Firm 13) Fully determined 14) Goody Two Shoes singer 15) Hard 16) Hard 80s pop star 17) Hard-hearted
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https://www.crosswordclues.com/clue/adamant

Adamant and similar words are used to refer to any especially hard substance, whether composed of diamond, some other gemstone, or some type of metal. Both adamant and diamond derive from the Greek word αδαμαστος (adamastos), meaning `untameable`. Adamantite and adamantium (a metallic name derived from the Neo-Latin ending -ium) are als.....
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http://en.wikipedia.org/wiki/Adamant

• (n.) A stone imagined by some to be of impenetrable hardness; a name given to the diamond and other substances of extreme hardness; but in modern mineralogy it has no technical signification. It is now a rhetorical or poetical name for the embodiment of impenetrable hardness. • (n.) Lodestone; magnet.
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http://thinkexist.com/dictionary/meaning/adamant/

1. A stone imagined by some to be of impenetrable hardness; a name given to the diamond and other substance of extreme hardness; but in modern minerology it has no technical signification. It is now a rhetorical or poetical name for the embodiment of impenetrable hardness. 'Opposed the rocky orb Of tenfold adamant, his ample shield.' (Milton) ... 2...
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http://www.encyclo.co.uk/local/20973
Ad'a·mant (ăd'ȧ*mănt)
noun [ Middle English
adamaunt ,
adamant , diamond, magnet, Old French
adamant , Latin
adamas ,
adamantis , the hardest metal, from Greek
'ada`mas ,
-antos ;
'a priv. +
dama^,n to ...
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http://www.encyclo.co.uk/webster/A/25

kind of stone inflexibleÂ
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HMS Adamant was a British submarine depot ship of 12500 tons displacement launched in 1939. HMS Adamant had a top speed of 17 knots and was armed with eight 4.5 inch guns and two multiple pompoms.
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http://www.probertencyclopaedia.com/browse/RA.HTM

archaic or obsolete terms > Stones & Minerals: A stone once believed to be impenetrable in its hardness. An extremely hard substance. Also used in Old English to mean magnet. As the name of any stone of impenetrable hardness it is often the name given to the diamond.
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http://www.skyscript.co.uk/glossarytt.html

[
adj] - not capable of being swayed or diverted from a course
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http://www.webdictionary.co.uk/definition.php?query=adamant

adamant Adam's aunt.
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http://www.wordinfo.info/words/index/info/view_unit/2978/
adamantine adjective impervious to pleas, persuasion, requests, reason; `he is adamant in his refusal to change his mind`; `Cynthia was inexorable; she would have none of him`- W.Churchill; `an intransigent conservative opposed to every liberal tenden...
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https://www.encyclo.co.uk/local/20974

utterly unyielding in attitude or opinion in spite of all appeals, urgings, etc. · too hard to cut, break, or pierce.
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https://www.infoplease.com/dictionary/adamant
[SAT terms] impervious to pleas, persuasion, requests, reason
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https://www.vocabulary.com/lists/148703
[Difficult words] very hard native crystalline carbon valued as a gem
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https://www.vocabulary.com/lists/675552
[Obscure words] very hard native crystalline carbon valued as a gem
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https://www.vocabulary.com/lists/675552
No exact match found.