inflexible

As a noun suppleness

is the quality of being supple; litheness.

As an adjective inflexible is

not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.

As an adjective inflexible

is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.

As a verb resilient is

.

Inflexible is a related term of opinionated.

As adjectives the difference between inflexible and opinionated

is that inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding while opinionated is having very strong opinions.

Inflexible is a related term of refractory.

As adjectives the difference between inflexible and refractory

is that inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding while refractory is obstinate and unruly; strongly opposed to something.

As a noun refractory is

a material or piece of material, such as a brick, that has a very high melting point.

As adjectives the difference between mercurial and inflexible

is that mercurial is (often capitalized, see (mercurial)) pertaining to the planet mercury while inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.

As a noun mercurial

is (obsolete) any of the plants known as mercury.

As a verb comprise

is to be made up of; to consist of (especially a comprehensive list of parts).

As an adjective inflexible is

not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.

As adjectives the difference between insistent and inflexible

is that insistent is standing or resting on something while inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.

As adjectives the difference between inflexible and impenitent

is that inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding while impenitent is not penitent; not repenting of sin; not contrite; of a hard heart.

As a noun impenitent is

one who is not penitent.

As adjectives the difference between inflexible and insensible

is that inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding while insensible is unable to be perceived by the senses.

Inflexible is a related term of austere.

As adjectives the difference between inflexible and austere

is that inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding while austere is austere.