Douglas Harper's Etymology Dictionary
1747, from un- (1) "not" + ostentatious (adj.). Related: Unostentatiously.
Wiktionary
a. Not ostentatious; simple; unpresuming.
WordNet
adj. not ostentatious; "his unostentatious office"; "unostentatious elegance" [syn: unpretentious, unpretending] [ant: ostentatious]
exhibiting restrained good taste; "the room is pleasant and understated" [syn: understated, unpretentious]
free from ostentation or pretension; "the restrained elegance of the room" [syn: modest, restrained]
Usage examples of "unostentatious".
It takes a long time to discover, through details like those of our paragraph, that every part of the apparent lapse is meticulously designed, and to reach at last the solution that Nabokov has not merely described the failure to control happiness and promise, but has made the reader experience this loss of control through sharing in his own unostentatious, apparently undeliberate and unrecognized failure - which is ultimately only an apparent failure.
Nor did she ever quite forget how long he had worshipped with unostentatious devotion at her lowly shrine of the caisse in the Cafe des Exiles, and how shabbily she had rewarded his admiration--never once, in those many months, with so much as a smile--and how unresentful had been his acceptance of her half-feigned, half-real indifference to his existence.
We find it mentioned that Gui, Count of Nevers, having sent a valuable present of plate to the Chartreux of Paris, the unostentatious monks returned it with a request that he would send them parchment instead.
I will, therefore, take occasion to assert that the higher powers of the reflective intellect are more decidedly and more usefully tasked by the unostentatious game of draughts than by a the elaborate frivolity of chess.
Urge upon your Brethren the teaching and the unostentatious practice of the morality of the Lodge, without regard to times, places, religions, or peoples.