steadfast

As adjectives the difference between inflexible and steadfast

is that inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding while steadfast is fixed or unchanging; steady.

As adjectives the difference between static and steadfast

is that static is unchanging; that cannot or does not change while steadfast is fixed or unchanging; steady.

As a noun static

is interference on a broadcast signal caused by atmospheric disturbances; heard as crackles on radio, or seen as random specks on television.

As adjectives the difference between intrepid and steadfast

is that intrepid is fearless; bold; brave while steadfast is fixed or unchanging; steady.

As adjectives the difference between indomitable and steadfast

is that indomitable is incapable of being subdued, overcome, or vanquished while steadfast is fixed or unchanging; steady.

As adjectives the difference between undaunted and steadfast

is that undaunted is showing courage and resolution while steadfast is fixed or unchanging; steady.

As adjectives the difference between steadfast and composed

is that steadfast is fixed or unchanging; steady while composed is showing composure.

As a verb composed is

past tense of compose.

As adjectives the difference between industrious and steadfast

is that industrious is hard-working and persistent; worksome while steadfast is fixed or unchanging; steady.

As adjectives the difference between steadfast and regular

is that steadfast is fixed or unchanging; steady while regular is bound by religious rule; belonging to a monastic or religious order (often as opposed to {{term|secular}}).

As a noun regular is

a member of the British Army (as opposed to a member of the Territorial Army or Reserve).

As adjectives the difference between steadfast and buoyant

is that steadfast is fixed or unchanging; steady while buoyant is having buoyancy; able to float.

As adjectives the difference between steadfast and tawdry

is that steadfast is fixed or unchanging; steady while tawdry is cheap and gaudy; showy.