ADAMANTLY
adamantly
(adverb) inflexibly; unshakably; “adamantly opposed to the marriage”
Source: WordNet® 3.1
Etymology
Adverb
adamantly (comparative more adamantly, superlative most adamantly)
In an immovable or inflexible manner.
Anagrams
• adamantyl
Source: Wiktionary
ADAMANT
Ad"a*mant, n. Etym: [OE. adamaunt, adamant, diamond, magnet, OF.
adamant, L. adamas, adamantis, the hardest metal, fr. Gr. adamare to
love, be attached to, the word meant also magnet, as in OF. and LL.
See Diamond, Tame.]
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. Lodestone; magnet. [Obs.] "A great adamant of acquaintance."
Bacon.
As true to thee as steel to adamant. Greene.
Source: Webster’s Unabridged Dictionary 1913 Edition