Noun
The quality of being importunate; pressing or pertinacious solicitation; urgent request; incessant or frequent application; troublesome pertinacity.
Source: Webster's dictionaryThe are of will-making chiefly consists in baffling the importunity of expectation. William Hazlitt
Few things will occasion a statesman so much embarrassment as a prevailing opinion that he will yield that to importunity which he ought to proffer to less forward parties upon juster grounds, and that whether he grants or refuses no harm can be done by asking. Henry Taylor
his importunity left me no alternative but to agree Source: Internet