With a firmness that resists all importunity or persuasion; in an inflexible, unyielding or immovable manner; relentlessly.

Not flexible; not capable of bending or being bent. / Not willing to change, e.g. one's opinion or habits. / Not able to be changed or adapted to circumstances.

The quality or state of being inflexible / Obstinacy of will or temper; firmness of purpose that will not yield to importunity or persuasion; unbending pertinacity.

The quality or state of being inflexible, or not capable of being bent or changed; unyielding stiffness

(botany) inflected

inflective / (obsolete) inflexible

present participle of inflex

To bend; to cause to become curved; to make crooked; to deflect.

Third-person singular simple present indicative form of inflex

plural of inflexibility