Solution

SPARTAN

3 clues

Austere

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles
Topics: History
From which decade: Older times

No-frills

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles

Unadorned

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles

Other solutions to Unadorned

Words are categorized by artificial intelligence: there can be mistakes.