American Heritage Dictionary
(2)
Century Dictionary
(2)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
But, what is still worse, this indulgence produces an obstinacy which is of more consequence as the child grows up.— The Best of the World's Classics, Restricted to Prose, Vol. VII (of X)—Continental Europe I
May the devil reward you in hell for your obstinacy, and my dying agonies So help me God the Lord Dies THE MAN (_throwing away his sword_).— The Continental Monthly, Vol. 6, No. 6, December 1864 Devoted To Literature And National Policy
They were angry with us for our obstinacy, as they called it, and mocked us and ridiculed the most sacred things.— The Promised Land
In the old days she had known it--had believed it was his dogged "obstinacy"--but she knew the hopelessness of opposing it.— Clarence
"I suppose I was wrong, for my father had left all the management of my affairs in his brother-in-law's hands Why, you said your uncle's hands just now Yes, Punch; in my mother's brother's hands, so he was my uncle Well, go on And I had been begging him to alter his plans Yes, and let you go back to the school And I suppose he was tired out with what he called my obstinacy, and he told me that if ever I dared to mention the army again he would give me a sound flogging And you up and said you would like to catch him at it?"— !Tention A Story of Boy-Life during the Peninsular War

Century Dictionary (1)
Bubble size: how much this word was used in a year
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