also: らくチン
na-adjective, noun
easy-peasy; simple; a breeze
Casual, childlike word for something that requires little effort. Often used in everyday speech to describe tasks, methods, or situations that are surprisingly easy.
このゲームは楽ちんだから、すぐクリアできるよ。
This game is easy-peasy, so you can clear it in no time.
スマホで注文できるから、楽
It's so easy since you can order from your smartphone.
na-adjective, noun
comfy; pleasant; comfortable
Describes a state of physical or mental comfort, often with a playful tone. Used for clothes, furniture, or relaxed situations.
このソファ、すごく楽ちんで寝ちゃいそう。
This sofa is so comfy I might fall asleep.
楽ちんな服で出かけよう。
Let's go out in comfy clothes.
Formed from 楽 (らく, 'easy, comfortable') and the suffix ちん, which adds a cute or childlike nuance. The exact origin of ちん is uncertain, but it is a common colloquial suffix in words like 安ちん (やすちん, 'cheap') and 高ちん (たかちん, 'expensive').