Difference between Inflexible and Muscle Bound

INFLEXIBLE vs MUSCLE BOUND: ADJECTIVE

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

Not flexible; incapable of bending or of being bent; rigid: as, an inflexible rod.
Inexorable, inflexible, resolute, steadfast, unbending, unyielding, immovable, unrelenting; obstinate, stubborn, dogged.
Synonyms Rigid, stiff.
Not to be changed or altered; unalterable; not permitting variation.
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.

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

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

This Last Rounder was at ringside during his last bout where he mercilessly chopped down his muscle-bound undefeated Venezuelan opponent inside four rounds.
A handful of muscle-bound Spartans hold off the world's largest army, but fail to fight off the yawns.
Much of the PLP in the human body is found in muscle bound to glycogen phosphorylase.
Being muscle bound makes you less likely to be successful at being an AST.
They need to be fast and strong and not muscle bound.
Back then, people thought lifting weights would make you muscle bound.
Muscle bound weight lifters may have a higher normal creatinine.
The etiology of pressure ulcers: skin deep or muscle bound?