not soft or yielding when pressed; comparatively solid, hard, stiff, or rigid

firm ground; firm texture.

securely fixed in place.

not shaking or trembling; steady

a firm voice.

not likely to change; fixed; settled; unalterable

a firm belief.

steadfast or unwavering, as persons or principles

firm friends.

indicating firmness or determination

a firm expression.

not fluctuating much or falling, as prices, values, etc.

The stock market was firm today.

to make firm; tighten or strengthen (sometimes fol. by up )

to firm up one's hold on something.

to steady or fix (sometimes fol. by up )

to firm up prices.

to become firm or fixed (sometimes fol. by up )

Butter firms by churning.

(of prices, markets, etc.) to recover; become stronger, as after a decline (sometimes fol. by up )

Stock prices firmed again today.

firmly

He stood firm.

noun

flexibility , softness , weakness , infirmity , instability , movability , indefiniteness , uncertainty

noun

compactness , density , durability , fixedness , hardness , impenetrability , impermeability , imperviousness , impliability , inelasticity , inflexibility , resistance , rigidity , solidity , temper , tensile strength , toughness , soundness , stability , steadiness , strength , substantiality , tautness , tension , tightness , constancy , decidedness , decision , determination , fixity , obduracy , obstinacy , purposefulness , purposiveness , staunchness , steadfastness , strictness , fastness , security , stableness , sturdiness , sureness , decisiveness , purpose , resoluteness , resolution , resolve , will , willpower , integrity , wholeness , consistency , immobility , iron