Unadorned.

Unembellished, without addition or decoration; not ornate, simple; not coloured; (of hair) worn straight, not curled; (of a person's name) without…

(un-, prefix1 affix 2.)

Not decked, adorned, or embellished.

Simple, unadorned; of poor or inferior quality; worthless, feeble, ineffectual. Obsolete.

figurative and in extended use. Bare, stripped down to essentials; without covering, ornament, or disguise; spec. (of a drink) unadulterated…

(un-, prefix1 affix 2.)

(un-, prefix1 affix 2.)

(un-, prefix1 affix 2.)

Unadorned with something.

Not fringed; unadorned.

figurative. Lacking honour or distinction; unworthy; undignified. Also: unadorned. Now rare.

(un-, prefix1 affix 2.)

Not ornamented; without decoration, unadorned, plain.

(un-, prefix1 affix 2.)

Having no ornament or decoration; plain, unadorned.

(un-, prefix1 affix 2.)

= no-frills, adj.

attributive. Characterized by or having no ornamentation or embellishment; plain, basic. Frequently of a commercial product or service.