Thesaurus / hard as nails
FEEDBACKsynonyms for hard as nails
synonyms for hard as nails
- firm
- heavy
- vigorous
- secure
- tough
- capable
- solid
- big
- forceful
- able
- steady
- tenacious
- athletic
- substantial
- stable
- active
- robust
- durable
- energetic
- able-bodied
- enduring
- fixed
- forcible
- hale
- hardy
- hearty
- mighty
- muscular
- reinforced
- rugged
- sinewy
- sound
- stalwart
- stark
- staunch
- stout
- strapping
- sturdy
- unyielding
- well-founded
- well-made
- heavy-duty
- in fine feather
- well-built
- callous
- hardhearted
- insensitive
- seasoned
- tough
- unbending
- unfeeling
- benumbed
- coldhearted
- hard-as-nails
- toughened
- tenacious
- vigorous
- stiff
- solid
- hard
- tight
- resilient
- healthy
- firm
- hardy
- stalwart
- fit
- stout
- brawny
- conditioned
- dense
- durable
- fibrous
- flinty
- hardened
- indigestible
- inflexible
- leathery
- lusty
- mighty
- resistant
- rigid
- robust
- rugged
- seasoned
- sinewy
- strapping
- unbreakable
- unyielding
- hard-bitten
- cohesive
- molded
- steeled
- tough as nails
- withstanding
- firm
- obstinate
- reserved
- crisp
- aloof
- distant
- formal
- hard-line
- hold the line
- incompliant
- inelastic
- inexorable
- inflexible
- intractable
- obdurate
- relentless
- resolute
- severe
- single-minded
- stiff
- strict
- stubborn
- uncompromising
- unrelenting
- unyielding
- uptight
- do or die
- dug in
- hold the fort
- locked in
- set in stone
- unflexible
- unswayable
- hold one's ground
- standing one's ground
- sticking to one's guns
- adamantine
- callous
- compact
- concentrated
- dense
- firm
- hardened
- hardy
- impenetrable
- indurate
- inflexible
- iron
- packed
- rigid
- rocky
- rugged
- set
- solid
- stiff
- stony
- strong
- compacted
- compressed
- consolidated
- hard-handed
- indurated
- unsusceptible
- aloof
- bloodless
- crass
- hard
- hard-boiled
- hardened
- hardhearted
- heartless
- impassible
- impassive
- incurious
- obtuse
- stony
- tactless
- thick-skinned
- tough
- uncaring
- unconcerned
- unfeeling
- unimpressionable
- unkind
- unresponsive
- coldhearted
- feelingless
- imperceptive
- able
- able-bodied
- active
- athletic
- big
- capable
- durable
- enduring
- energetic
- firm
- fixed
- forceful
- forcible
- hale
- hardy
- hearty
- heavy
- mighty
- muscular
- potent
- powerful
- reinforced
- robust
- rugged
- secure
- sinewy
- solid
- sound
- stable
- stalwart
- stark
- staunch
- steady
- stout
- strapping
- sturdy
- substantial
- tenacious
- tough
- unyielding
- vigorous
- well-founded
- well-made
- heavy-duty
- in fine feather
- well-built
- ferocious
- vicious
- savage
- barbarous
- bloodthirsty
- cruel
- dog-eat-dog
- merciless
- pitiless
- relentless
- unprincipled
- tenacious
- stubborn
- dogged
- steadfast
- resolute
- strong-willed
- purposeful
- serious
- decisive
- single-minded
- firm
- set
- pat
- bent
- persevering
- decided
- obstinate
- fixed
- settled
- bent on
- constant
- earnest
- intent
- solid
- unfaltering
- unflinching
- unwavering
- unhesitating
- resolved
- mean business
- hard-as-nails
- hardboiled
- on ice
- set on
- strong-minded
- bleak
- tough
- harsh
- painful
- grim
- acrimonious
- angry
- antagonistic
- austere
- bitter
- brutal
- callous
- cold
- cold-blooded
- dark
- disagreeable
- distressing
- dour
- exacting
- grievous
- hard-boiled
- hostile
- inclement
- intemperate
- intolerable
- obdurate
- perverse
- pitiless
- rigorous
- rugged
- severe
- stern
- strict
- stringent
- stubborn
- thick-skinned
- unfeeling
- unjust
- unkind
- unpleasant
- unrelenting
- unsparing
- unsympathetic
- vengeful
- rancorous
- resentful
- cold fish
- hard-nosed
- callous
- firm
- hard-line
- headstrong
- inflexible
- obdurate
- obstinate
- rough
- stern
- strict
- unbending
- unfeeling
- hard-shelled
- seasoned
- callous
- prepared
- unbending
- benumbed
- accustomed
- habituated
- contemptuous
- cruel
- disdainful
- hard-boiled
- hardhearted
- heartless
- impenetrable
- impious
- inaccessible
- irreverent
- obdurate
- obtuse
- resistant
- uncaring
- unemotional
- hard-bitten
- uncompassionate
- coldhearted
- inured
- indurated
- steeled
- toughened
- case-hardened
- hard-as-nails
- unashamed
- unrepenting
- unsubmissive
- insensitive
- unkind
- ruthless
- harsh
- inhuman
- callous
- brutal
- cruel
- cold-blooded
- merciless
- uncaring
- cold-hearted
- hard
- hard-boiled
- obdurate
- pitiless
- savage
- thick-skinned
- unemotional
- unfeeling
- unsympathetic
- uncompassionate
- cold fish
- hard-hearted
- assured
- complacent
- composed
- cool
- immovable
- nerveless
- nonchalant
- sedate
- self-possessed
- self-satisfied
- smug
- thick-skinned
- tranquil
- unaffected
- undisturbed
- unflappable
- unmoved
- unruffled
- untouched
- cool as cucumber
- disimpassioned
- equanimous
- roll with punches
- stiff upper lip
- stoical
- unexcitable
- stamina
- endurance
- grit
- persistence
- staying power
- heart
- backbone
- constancy
- permanence
- guts
- gutsiness
- moxie
- intestinal fortitude
- imperishability
- starch
- lastingness
- durableness
- stick-to-itiveness
Meet Grammar Coach
Improve Your Writing 
antonyms for hard as nails
MOST RELEVANT
- low
- moderate
- mild
- obscure
- easy-going
- agreeable
- unhealthy
- broken
- inept
- delicate
- unfixed
- easy
- small
- little
- moving
- yielding
- weak
- soft
- slack
- loose
- pale
- vague
- indistinct
- uncaring
- laid-back
- irresolute
- complacent
- sluggish
- lazy
- infirm
- ineffective
- feeble
- untrustworthy
- undependable
- intermittent
- unable
- wobbly
- vulnerable
- fragile
- lethargic
- inactive
- impotent
- idle
- unimportant
- insignificant
- indefinite
- unstable
- tender
- nice
- gentle
- delicate
- easy
- soft
- pliant
- flexible
- slack
- loose
- yielding
- weak
- facile
- controllable
- kind
- wobbly
- vulnerable
- unstable
- fragile
- pliable
- wavering
- vacillating
- hesitating
- unfixed
- soft
- flexible
- yielding
- weak
- undecided
- indefinite
- changeable
- undetermined
- irresolute
- doubtful
- sympathetic
- sensitive
- simple
- mild
- yielding
- soft
- pliant
- flexible
- easy
- gentle
- sunny
- nice
- bright
- untrue
- uncertain
- questionable
- inexact
- disputable
- merciful
- facile
- pliable
- malleable
- kind
- cheerful
- pleasant
- caring
- sympathetic
- gentle
- nice
- giving
- sensitive
- feeling
- warmhearted
- merciful
- compassionate
- kind
- friendly
- considerate
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
How to use hard as nails in a sentence
He thought they were now in touch with our troops at "X" but that they had been through some hard fighting to get there.
GALLIPOLI DIARY, VOLUME IIAN HAMILTONHowever this be, it is hard to say that these fibs have that clear intention to deceive which constitutes a complete lie.
CHILDREN'S WAYSJAMES SULLYAnd it would be hard indeed, if so remote a prince's notions of virtue and vice were to be offered as a standard for all mankind.
GULLIVER'S TRAVELSJONATHAN SWIFTEven if poverty were gone, the flail could still beat hard enough upon the grain and chaff of humanity.
THE UNSOLVED RIDDLE OF SOCIAL JUSTICESTEPHEN LEACOCK"I congratulate you on your engagement," he said at last, looking up with a face that seemed to Bernard hard and unnatural.
CONFIDENCEHENRY JAMESHere there was a scuffling sound in the basket, and the Roc rapped on the cover with her hard beak, and cried, "Hush!"
DAVY AND THE GOBLINCHARLES E. CARRYLOne whist table only is at work; General Pepper and three old hands of the same kidney are hard at it.
THE PIT TOWN CORONET, VOLUME I (OF 3)CHARLES JAMES WILLSYoung Lamb's big cigar has been out long ago; but he pulls hard at it, wholly unaware of the fact.
THE PIT TOWN CORONET, VOLUME I (OF 3)CHARLES JAMES WILLSThe former, in its frozen state, somewhat resembled hard butter.
THE GIANT OF THE NORTHR.M. BALLANTYNEHis strong hands lay palm downwards on the arms of his chair, pressing them hard.
BELLA DONNAROBERT HICHENSWORDS RELATED TO HARD AS NAILS
- acrimonious
- angry
- antagonistic
- austere
- bitter
- bleak
- brutal
- callous
- cold
- cold fish
- cold-blooded
- dark
- disagreeable
- distressing
- dour
- exacting
- grievous
- grim
- hard as nails
- hard-boiled
- harsh
- hostile
- inclement
- intemperate
- intolerable
- obdurate
- painful
- perverse
- pitiless
- rancorous
- resentful
- rigorous
- rugged
- severe
- stern
- strict
- stringent
- stubborn
- thick-skinned
- tough
- unfeeling
- unjust
- unkind
- unpleasant
- unrelenting
- unsparing
- unsympathetic
- vengeful
- acrimonious
- angry
- antagonistic
- austere
- bitter
- bleak
- brutal
- callous
- cold
- cold fish
- cold-blooded
- dark
- disagreeable
- distressing
- dour
- exacting
- grievous
- grim
- hard as nails
- hard-boiled
- harsh
- hostile
- inclement
- intemperate
- intolerable
- obdurate
- painful
- perverse
- pitiless
- rancorous
- resentful
- rigorous
- rugged
- severe
- stern
- strict
- stringent
- stubborn
- thick-skinned
- tough
- unfeeling
- unjust
- unkind
- unpleasant
- unrelenting
- unsparing
- unsympathetic
- vengeful
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.