"Pertinate" is a word in ENGLISH

To argue pertinaciously.

Stubborn perverseness; pertinacious resistance to authority.

To frequent; to resort to frequently; to visit pertinaciously or intrusively; to intrude upon.

One who having made a profession of Christian belief, deliberately and pertinaciously refuses to believe one or more of the …

The quality of being importunate; pressing or pertinacious solicitation; urgent request; incessant or frequent application; troublesome pertinacity.

To tease in a petty way; to scold habitually; to annoy; to fret pertinaciously.

Pertinaciously adhering to an opinion, purpose, or course; persistent; not yielding to reason, arguments, or other means; stubborn; pertinacious; -- …

Resolute; persevering; constant; steady.

Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar.

The quality or state of being pertinacious; obstinacy; perseverance; persistency.

The quality or state of being pertinent; pertinence.

Pertinacity.

Pertinaciously.

pírme - (Sp. firme) Constant, consistent, incessant, uninterrupted, persevering, perpetual, continual, ceaseless, unceasing, persistent, continuous, pertinacious, steady, invariable, regular; firm; …

A perennial grass (Agropyrum repens) having long running rootstalks, by which it spreads rapidly and pertinaciously, and so becomes a …

To contend, contest, or altercate, esp. in a pertinacious manner on insufficient grounds.

One who pertinaciously contends for some trifling things, as a point of etiquette; an unreasonable, obstinate contender; as, a stickler …

Not easily subdued; unyielding; stubborn; obstinate; pertinacious; as, a stiff adversary.

An obstinate decision or determination; a pertinacious affirmation.

To contend obstinately; to be pertinacious.