ornamentation C2+

/ˌɔrnəmɛnˈteɪʃən/ decorative details added to something for adornment M S

inornate C2+

/ˌɪnɔrˈneɪt/ plain and unadorned; without ornament M S

unadorned C2+

/ˌʌnəˈdɔːrnd/ plain; not decorated or embellished M S

ornateness C2+

/ɔrˈneɪtnəs/ the quality of being elaborately or excessively decorated M S