a. (UN-1 7.)
1747. G. West, Resurrect., 355. The simple, unaffected, unornamental and unostentatious Manner, in which they deliver Truths so important.
1829. Cobbett, Eng. Gard., v. § 198. Borage is by no means unornamental in a flower-garden.
1834. Gentl. Mag., CIV. I. 34. Two small arches of massy and unornamental stone-work.
Hence Unornamentally adv.
1889. Times, 27 Dec., 11. These cans are used ingeniously, if unornamentally, as building materials in the repair of roofs.