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.

adjective

flexible , loose , slack , soft , supple , weak , yielding , moving , unsettled , unstable , wavering , alterable , changeable , indefinite , irresolute , facile , flaccid , inconstant , lax , vacillating

adjective

close , close-grained , compact , compressed , concentrated , concrete , condensed , congealed , dense , fine-grained , hard , hardened , heavy , impenetrable , impermeable , impervious , inelastic , jelled , nonporous , refractory , rigid , set , solid , solidified , stiff , sturdy , substantial , thick , tough , unyielding , anchored , bolted , braced , cemented , closed , durable , embedded , fast , fastened , fixed , immobile , immovable , motionless , mounted , nailed , petrified , riveted , robust , rooted , screwed , secure , secured , settled , soldered , sound , spiked , stationary , steady , strong , taut , tenacious , tight , tightened , unfluctuating , unshakable , welded , abiding , adamant , bent , bound , consistent , constant , dead set on , determined , enduring , established , exact , explicit , flat , going , hang tough * , inflexible , intent , never-failing , obdurate , persevering , persistent , prevailing , resolute , resolved , specific , stable , stand pat * , stated , staunch , steadfast , stipulated , strict , sure , true , unbending , unchangeable , undeviating , unflinching , unqualified , unshaken , unwavering , incompressible , uncompromising , decided , allegiant , liege , loyal , certain , clinging , adamantine , essential , incompliant , ineradicable , inexpugnable , inherent , insoluble , invincible , preemptory , stanch , substantive , sustained , unassailable , unflattering

noun

association , bunch , company , concern , conglomerate , corporation , crew , crowd , enterprise , gang , house , megacorp , mob , multinational , organization , outfit , partnership , ring , business , establishment , adamant , adhesiveness , anchored , backboned , certain , compact , confirm , consistency , consistent , constant , decided , definite , dense , determination , determined , durable , established , exact , faithful , fastened , fixed , hard , hearty , immovable , inelastic , inflexible , intent , iron , loyal , persistence , resolute , resolution , rigid , secured , set , settled , solid , solidarity , solidity , sound , stable , staunch , steadfast , steady , stiff , stout , strict , strong , sturdy , substantial , sure , tenacity , tight , unmoved , unshaken , unwavering , unyielding , vertebration