Difference between Inflexible and Stiff

INFLEXIBLE vs STIFF: NOUN

Not willing to change, e.g. one's opinion or habits; obstinate; stubborn; resolute; determined.
Resistant to being bent
Incapable of change
Incapable of change; unalterable; immutable.
Firm in will or purpose; not to be turned, changed, or altered; resolute; determined; unyieding; inexorable; stubborn.
Not capable of being bent; stiff; rigid; firm; unyielding.
Refusing to change one's attitude, purpose, or principles; immovable.
Incapable of being changed; unalterable.
Not easily bent; stiff or rigid. : stiff.
Not making concessions
Incapable of adapting or changing to meet circumstances
Literal meanings
Extended meanings; incapable of change

Not flexible; incapable of bending or of being bent; rigid: as, an inflexible rod.
Unyielding in temper or purpose; that will not yield to prayers or arguments; firm in purpose; incapable of being turned; not to be prevailed on.
Not to be changed or altered; unalterable; not permitting variation.
Synonyms Rigid, stiff.
Inexorable, inflexible, resolute, steadfast, unbending, unyielding, immovable, unrelenting; obstinate, stubborn, dogged.

Strong: said of an alcoholic drink, or mixed drink of which spirit forms a part.
Strong; lusty; stanch, both physically and mentally.
Strong and steady in motion: as, a stiff breeze.
Rigidly ceremonious; formal in manner; constrained; affected; unbending; starched: as, a stiff deportment.
Not natural and easy in movement; not flowing or graceful; cramped; constrained: as, a stiff style of writing or speaking.
Not easily bent: not to be moved without great friction or exertion; not working smoothly or easily.
Drawn tight; tense: as, a stiff cord.
Firm in resistance or persistence; obstinate; stubborn; pertinacious.
Rigid; not easily bent; not flexible or pliant; not flaccid: as, stiff paper; a cravat stiff with starch.
To become obstinate or stubborn.
To become or grow stiff.
Not fluid: thick and tenacious; neither soft nor hard: as, a stiff batter; stiff clay.
Not shakable
Marked by firm determination or resolution; not shakable
Strong, vigorous
Having a strong physiological or chemical effect
To a great degree
Inflexible, uncompromising.
Prim, punctilious.
Synonyms Unbending, unyielding.
Rigid as in death; dead.
Hard to receive or accept; hard to bear.
Unyielding; firm: said of prices, markets, etc.: as, the wheat-market is stiff.
Extremely
Hard to master or overcome; very difficult: as, a stiff examination in mathematics.
High; steep: as, a stiff price.
Nautical, bearing a press of canvas or of wind without careening much; tending to keep upright: as, a stiff vessel; a stiff keel: opposed to crank.

Fossilized, Flinty, Stiffened, Adamant, Inexorable, Ironclad, Adamantine, Stiff, Uncompromising, Unadaptable, Unyielding, Ossified, Unbending, Intransigent, Rigid

Fuddled, Tipsy, Tiddly, Starchy, Immobile, Soused, Wet, Formal, Hard, Uphill, Squiffy, Inflexible, Tight, Strong, Rigid

Fossilized, Flinty, Stiffened, Adamant, Inexorable, Ironclad, Adamantine, Stiff, Uncompromising, Unadaptable, Unyielding, Ossified, Unbending, Intransigent, Rigid

Fuddled, Tipsy, Tiddly, Starchy, Immobile, Soused, Wet, Formal, Hard, Uphill, Squiffy, Inflexible, Tight, Strong, Rigid

For Verizon to be so inflexible is horrible!
In trust planning, irrevocable no longer means inflexible.
We called Regents and the staff was inflexible.
An inflexible, categorical rule neglects these additional considerations.
Offers fall apart when both sides are inflexible.
Long cable is inflexible and gets kinked easily.
Development and validation of the inflexible eating questionnaire.
Identified by Dialogue Partners: The dialogue partners reported that inflexible federal workplace policies create the following issues for womenwho have caregiving responsibilities: Inflexible workpla
For example, a family which is rigidly inflexible toward relationship roles would be expected to be rigidly inflexible in the disciplining of children.
Inflexible parents, inflexible kids: A sixyear longitudinal study of parenting style and the development of psychological flexibity in adolescence.

Fixed The Cuff But My Patient Is Stiff!
Stiff PJ, Micallef I, Nademanee AP, et al.
Hamiltonian systems with slowly varying quadratic stiff potentials.
Cures riai ache, Stiff Neck, Ague, ooe night.
The initiative faced stiff opposition from Republican Gov.
Macbook pro stiff hinge Macbook pro stiff hinge.
The torsionally stiff elastomeric coupling and the torsionally stiff metallic element coupling offer no damping between the driver and the driven equipment.
Stiff Systems There is a particular class of systems called stiff, for which numerical stability is a critical issue.
Often the joint is more stiff after resting so joints may be more stiff and sore in the mornings.
The muscles of people with spastic cerebral palsy feel stiff and their movements may look stiff and jerky.