Persistent vs. Relentless

Persistentadjective

Obstinately refusing to give up or let go.

Persistentadjective

Insistently repetitive.

Persistentadjective

Indefinitely continuous.

Persistentadjective

(botany) Lasting past maturity without falling off.

Persistentadjective

(computing) Of data or a data structure: not transient or temporary, but remaining in existence after the termination of the program that creates it.

Persistentadjective

(mathematics) Describing a fractal process that has a positive Brown function

Persistentadjective

non-transient.

Persistentadjective

Inclined to persist; having staying qualities; tenacious of position or purpose.

Persistentadjective

Remaining beyond the period when parts of the same kind sometimes fall off or are absorbed; permanent; as, persistent teeth or gills; a persistent calyx; - opposed to deciduous, and caducous.

Persistentadjective

never-ceasing;

Persistentadjective

continually recurring to the mind;

Persistentadjective

retained; not shed;

Relentlessadjective

Unrelenting or unyielding in severity

Relentlessadjective

Unremitting, steady and persistent

Relentlessadjective

Unmoved by appeals for sympathy or forgiveness; insensible to the distresses of others; destitute of tenderness; unrelenting; unyielding; unpitying; as, a prey to relentless despotism.

Relentlessadjective

not to be placated or appeased or moved by entreaty;

Relentlessadjective

never-ceasing;