"Headstrongness" is a word in ENGLISH

Of or belonging to, or having the qualities of, the ass, as stupidity and obstinacy.

The quality of being asinine; stupidity combined with obstinacy.

A quadruped of the genus Equus (E. asinus), smaller than the horse, and having a peculiarly harsh bray and long …

state or quality of being contrary; opposition; inconsistency; contrariety; perverseness; obstinacy.

A writ commanding that persons excommu-nlcated, who for their obstinacy had been committed to prison, but were unlawfully set free …

Directed by ungovernable will, or proceeding from obstinacy.

The quality or state of being incompliant; unyielding temper; obstinacy.

The quality or state of being inflexible, or not capable of being bent or changed; unyielding stiffness; inflexibleness; rigidity; firmness …

Firm establishment by long continuance; firmness or deep-rooted obstinacy of any quality or state acquired by time; as, the inveteracy …

katumanán - Sarcastically used for: Obstinacy, wilfulness, self-will, heedlessness. Ay katumanán siníng bátà! Oh, the obstinacy of this boy! How …

nga - A conjunctive particle used in various ways: a.) to connect adjectives and nouns, nouns and nouns, etc., e.g. …

The duality or state of being obdurate; invincible hardness of heart; obstinacy.

The quality or state of being difficult to remedy, relieve, or subdue; as, the obstinacy of a disease or evil.

A fixedness in will, opinion, or resolution that can not be shaken at all, or only with great difficulty; firm …

Obstinacy; stubbornness.

Obstinacy in opinious.

Obstinacy in holding to one's belief or impression; opiniativeness; conceitedness.

To stand firm; to be fixed and unmoved; to stay; to continue steadfastly; especially, to continue fixed in a course …

The quality or state of being persistent; staying or continuing quality; hence, in an unfavorable sense, doggedness; obstinacy.

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