To be inferior to; to be worse than; to fall short when compared to someone or something.
このモデルは性能が最新の機種に劣る。
This model's performance is inferior to the latest models.
彼の技術は誰にも劣らない。
His skills are second to none.
価格は安いが、品質は他社製品に劣ることがある。
The price is low, but the quality can be inferior to other companies' products.