Synonyms of happy-go-lucky

adjectiveCarefree or untroubled.

• easygoingCalm, relaxed, casual and informal.
• devil-may-careCarefree, reckless, irresponsible.
• airy
• at ease
• at peace
• carefreeWithout cares or worries; free of concern or worries; without difficulty.
• casualCareless.
• chillCalm, relaxed, easygoing.
• cool
• easy-breezyLaid-back and uncomplicated.
• indifferentIndicating or reflecting a lack of concern or care.
• insouciantCasually unconcerned; carefree, indifferent, nonchalant.
• laid-backRelaxed and easy‐going; demonstrating an absence of stress or worry.
• leisurelyCharacterized by leisure; taking plenty of time; unhurried.
• lightheartedEnjoyably lacking of seriousness, not grave.
• loose
• mellowCheerful, genial, jovial, merry; also, easygoing, laid-back, calm, relaxed.
• offhand
• nonchalant
• pococuranteApathetic, indifferent or nonchalant.
• relaxedFree from tension or anxiety; at ease; leisurely.
• sereneWithout worry or anxiety; unaffected by disturbance.
• soluteRelaxed; hence, cheerful, merry.
• tranquil
• unanxiousNot anxious.
• unbotheredNot bothered, serene.
• unconcernedNot anxious, apprehensive, or worried.
• undisturbed
• unruffled
• untroubledWithout worries; free from care.
• unworriedFree of worries.
• careless archaicFree from care; unworried, without anxiety.
• wanton obsoletePlayful, sportive; merry or carefree.