painlessly
🇺🇸
/ˈpeɪnləsli/
🇬🇧
/ˈpeɪnləsli/
without causing pain or discomfort
The doctor removed the splinter painlessly.
醫生無痛地取出了木刺。
in an easy and trouble-free manner
The software update installed painlessly.
軟體更新安裝得非常順利。