unembellished
1. [ adjective ] lacking stylistic embellishment
Synonyms: plain literal
Examples:

"a literal description" "wrote good but plain prose" "a plain unadorned account of the coronation" "a forthright unembellished style"

Related terms: unrhetorical
2. [ adjective ] lacking embellishment or ornamentation
Synonyms: plain unornamented
Examples:

"a plain hair style" "unembellished white walls" "functional architecture featuring stark unornamented concrete"

Related terms: unadorned