楽|らくraku[2]odaka (tail-high)

1. noun, na-adjectivecomfort; ease; relief; (at) peace; relaxation
2. na-adjective, nouneasy; simple; without trouble; without hardships
   近頃ちかごろは旅行りょこうは楽らくだ。↗

   Travelling is easy these days.
3. na-adjective, noun(economically) comfortable
4. nounraku pottery
5. noun, Buddhismsukha (happiness)

• Synonym安楽あんらくWrittenMore literary: bodily and mental ease (「安楽な老後」), mostly about one's living circumstances; 「楽」 is more colloquial and can also mean a task is easy.
• Synonym心地よいここちよいNeutralPleasant to the senses or mood (「心地よい風」); it does not mean a task is easy or takes no effort.
• Synonym気楽きらくNeutralCarefree and unburdened (「気楽に話す」); the point is having no mental load, while 「楽」 also covers physical ease and easy tasks.
• Synonym快適かいてきNeutralComfortable surroundings or conditions (「快適な部屋」), a fairly objective description; it never means easy, while 「楽」 covers both senses.
• Synonym快いこころよいWrittenWritten/formal: pleasant, refreshing (「快い風」); as the adverb 「快く」 it means readily agreeing. Says nothing about tasks being easy.
• Synonym安らかやすらかNeutralPeaceful and free of worry (「安らかに眠る」), often for sleep or passing away; it speaks of calm rest, not of a task being light or effortless.
• SynonymたやすいNeutralEffortless, easily done (「たやすいことだ」); only about tasks, never about physical or mental comfort.
• SynonymイージーNeutralLoanword for simple and easy, also careless (「イージーミス」); it never expresses physical or mental comfort.
• Synonym簡単かんたんNeutralSimple, uncomplicated (「簡単な問題」) — the point is low difficulty; 「楽」 stresses saved effort and can also mean feeling at ease.
• Synonym簡易かんいNeutralSimplified, basic (「簡易包装」); mostly modifies facilities and procedures, and says nothing about feeling relaxed.
• Synonym簡便かんべんWrittenWritten/formal: handy and convenient (「簡便な方法」), said of methods and procedures; not about feeling relaxed.
• Synonym容易よういWrittenWritten/formal: easy (「容易に解決する」); 「楽」 is more colloquial and can also express bodily comfort.
• Synonym楽チンらくチンCasualColloquial for easy, comfy, effortless (「楽ちんな服」); more casual than 「楽」, so avoid it in formal settings.
• Related気安いきやすいNeutralUnreserved and approachable (「気安く話しかける」); it is about relationships and can hint at being overly familiar or rude.
• RelatedのんきNeutralEasygoing and unhurried, sometimes carelessly so (「呑気な人」); mostly describes character, while 「楽」 describes situations or tasks.
• RelatedやすいNeutralMostly used as the suffix 「～やすい」 for things easy to do or likely to happen; rarely stands alone — in daily speech say 「簡単」 or 「楽」.
• Related穏やかおだやかNeutralCalm and mild (「穏やかな天気」「穏やかな人」), stressing what is not intense; it meets 「楽」 only in the sense of peacefulness.
• Related安心あんしんNeutralRelief, peace of mind (「安心する」) — no worries, a settled heart; 「楽」 is about lighter burdens or easy tasks, as in 「気が楽になる」.
• Related心安いこころやすいNeutralDescribes a close bond with no need for reserve (「心安い友人」), also being at ease in mind; fairly rare, and never about easy tasks.
• Related造作ないぞうさないWrittenWritten/formal: takes no trouble, easily managed; everyday speech prefers 「簡単」 or 「楽」, and it never expresses comfort.
• Antonym苦くNeutralPain and hardship — the antonym of 「楽」 in the comfort sense, as in 「苦あれば楽あり」; also 「苦にする」「苦もなく」.

Use 「楽」 for feeling physically or mentally at ease and for tasks that take little effort. For an unburdened mind say 「気楽」, for comfortable surroundings 「快適」, for simple tasks 「簡単」 or 「容易」, and for peace of mind 「安心」; 「苦」 is the opposite.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （ラク）安逸あんいつであること。
2. （ラク）苦痛くつうが緩和かんわされること。
3. （ラク）たやすいこと。
4. （ラク）できるだけ労力ろうりょくをかけないこと。てぬき。
5. （ラク）公演こうえんなどの最終日さいしゅうび。千秋楽せんしゅうらく、楽日らくび。