The property of being moderate in price or expenditures(noun)
Freedom from vanity or conceit(noun)
WordNet. Princeton University. 2010.
Use "modestness" in a sentence
"All the things I once hated about her I now love - the diamond-shaped face, the weird teeth, the modestness of her physicality."
"Bucket in the book is all-knowing, all-seeing - he continually sets the scene yet with a certain modestness of scope or at least affability."
"My several reminders of the modestness of my operation did not seem to daunt him, as he offered the support not only of his famous wife and children, but of the writers in his circle, such as his college mentor, one winner of the 1992 Booker Prize, and Lady Hayden-Guest."