Defn: Not to be persuaded; obstinate; unyielding; impersuasible.
— Im`per*suad"a*ble*ness, n.

IMPERSUASIBLE Im`per*sua"si*ble, a. Etym: [Pref. im- not + persuasible: cf. OF. impersuasible.]

Defn: Not persuasible; not to be moved by persuasion; inflexible; impersuadable. Dr. H. More. — Im`per*sua`si*bil"i*ty, n.

IMPERTINENCE
Im*per"ti*nence, n. Etym: [Cf. F. impertinence. See Impertinent.]

1. The condition or quality of being impertnent; absence of pertinence, or of adaptedness; irrelevance; unfitness.

2. Conduct or language unbecoming the person, the society, or the circumstances; rudeness; incivility. We should avoid the vexation and impertinence of pedants who affect to talk in a language not to be understood. Swift.

3. That which is impertinent; a thing out of place, or of no value. There are many subtile impertinences learned in schools. Watts.

IMPERTINENCY
Im*per"ti*nen*cy, n.

Defn: Impertinence. [R.]
O, matter and impertinency mixed! Reason in madness! Shak.

IMPERTINENT Im*per"ti*nent, a. Etym: [F., fr. L. impertinens, -entis; pref. im- not + pertinens. See Pertinent.]