pertinaciousness

"Mark will do as I bid him," she said, with a na�ve and pertinaciousness that was wholly irresistible.

I suppose they attach some political importance to the having had the discussion with us before it comes on in the House of Commons, for I can conceive no other reason for this pertinaciousness.

"Posterity," said Burke, "will bless the pertinaciousness of that day."

But, even then, in that moment of seeming frustration, Durkin's subterranean yet terrible pertinaciousness, his unparaded bull-dog indefatigability, glowed and burned at its brightest.

For how gently and meekly doth he here pass over Thomas his unhandsome expression, finding that Thomas spake here, not out of obstinacy and pertinaciousness, but out of ignorance and a mistake.