plain and sturdy; simple and robust
Describes something that is both straightforward in design and physically or structurally strong. Often used for tools, furniture, or systems that prioritize function over decoration.
This desk has a plain and sturdy construction, so it will last a long time.
His proposal was simple and robust, and everyone was convinced.
Compound of 簡明 (simple, plain) and 強固 (strong, sturdy). The exact historical derivation is uncertain, but the word is formed from standard Sino-Japanese morphemes.