unshakable
unyielding
- adamant
- dead set on
- determined
- firm
- fixed
- hard
- hard-core
- hard-line
- hard-nosed
- hardheaded
- headstrong
- immalleable
- immovable
- implacable
- impliable
- inexorable
- inflexible
- intractable
- locked in
- merciless
- mulish
- obdurate
- obstinate
- pertinacious
- pigheaded
- refractory
- relentless
- rigid
- ruthless
- single-minded
- solid
- staunch
- stiff
- stiff-necked
- stubborn
- tough
- unbending
- uncompliant
- uncompromising
- unmovable
- unrelenting
- unswayable
- unwavering
Word Origin & History
late 14c., "hard, unbreakable," from adamant (n.). Figurative sense of "unshakeable" first recorded 1670s. Related: Adamantly; adamance.
Example Sentences foradamant
Virtue is an adamant that is sacred and secure from all their efforts.
Imogen was deaf to their expostulations, and indurate and callous as adamant to their persuasions.
"Oh, do let's stay till it's all done," she urged, but Bruce and Elinor were adamant.
I begin to believe she is made of adamant instead of what other women are made of.
A firm tread had Mother Scoville, a light hand with pastry, and a will that was adamant.
I am adamant, however, where cabbies and chauffeurs are concerned.
But in all the good things which he lacked, we were confirmed like adamant to defy him.
Peter Dawson was adamant, but he was a voice crying in the wilderness.
This adamant stand should not have surprised the Secretary of Defense.
Her father was adamant in his belief that "Jadoo" and nothing else accounted for her state.