steely

piercing

Penetrating or very sharp

• coldLow temperature state
• unblinkingNot closing one's eyes
• hardFirm or demanding

fixed · penetrating · icy · stern · unwavering · intense · sharp · glinting · intimidating · expressionless

tough

Durable and strong

• resilientAble to recover quickly
• hardFirm or demanding
• rigidUnable to bend

unyielding · reinforced · impenetrable · unbreakable · armored · fortified · robust · tempered · hardened · unbending

resolve

Firmness of purpose

• gritDetermination or abrasive particles
• willpowerMental strength resisting impulse
• tenacityPersistent grip or resolve

perseverance · fortitude · steadfastness · unwavering · unyielding · adamant · resolute · firm · staunch · unflinching

iron

Element twenty-six

• chromeReflective metal coating
• silverLustrous white precious metal
• zincElement thirty

alloy · galvanized · burnished · gunmetal · brushed · polished · gleaming · lustrous · glinting · shimmering

gray

Neutral achromatic hue

• blue-grayCool neutral color
• silverLustrous white precious metal
• slateFissile metamorphic rock

pewter · charcoal · gunmetal · leaden · glint · sheen · muted · neutral · ashen · silvery

• cold-heartedcallous, cold, cold-blooded, cold-hearted, cruel
• couragebravery, resilience, fearlessness, boldness, courage
• strength wordsstrong, powerful, mighty, potent, robust
• tenacitydetermined, persistence, persistent, perseverance, determination
• tough traitstough, resilient, fearless, brave, courageous
• unshakeableunflappable, unfazed, unbothered, resilient, stoic