pertinaciouslyadv.
/pəːtᵻˈneɪʃəsli/, U.S. /ˌpərtnˈeɪʃəsli/, Scottish English /pərtᵻˈneʃəslɪ/ Originally Scottish.
In a pertinacious manner.
ΘΚΠ
the mind > will > decision > obstinacy or stubbornness > [adverb]
stoutly1303
a-strut1330
sturdilyc1374
obstinately1395
throa1400
pertinacelyc1425
stubbornlyc1430
pertinatelyc1475
stiffneckedlya1555
peremptorilya1575
pertinaciouslya1614
tenaciouslya1667
mulishly1795
stupidly1866
dourly1871
bloody-mindedly1962
a1614 J. Melville Autobiogr. & Diary (1842) 124 A few buikes of Aristotle quhilk they lernit pertinatiuslie to bable and flyt upon.
c1650 J. Row & J. Row Hist. Kirk Scotl. (1842) 58 The Assemblie condemnes this proposition as erroneous, false, and, if pertinaciouslie maintained, hereticall.
a1722 J. Toland Coll. Several Pieces (1726) I. 335 The manner of disputation us'd by those who are pertinaciously addicted to their opinions.
1751 D. Hume Enq. Princ. Morals i. 1 Disputes with Persons, pertinaciously obstinate in their Principles, are, of all others, the most irksome.
1818 R. Hodgkinson Let. 2 Apr. in F. Wood & K. Wood Lancashire Gentleman (1992) xii. 306 He purtinaciously & perseveringly objects to the Plans.
1876 J. G. Holland Story of Sevenoaks (new ed.) xi. 145 It returned and returned again so pertinaciously that he was glad to order his horses and ride to the factory.
1904 J. London Sea-wolf xviii. 173 Thomas Mugridge, so strangely and pertinaciously clinging to life, was soon limping about again.
1993 Dict. National Biogr.: Missing Persons 110/1 Byng pertinaciously sought out ruined castles and abbeys.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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adv.a1614