難なく・難無く|なんなくnannaku[1]atamadaka (head-high)

1. adverbeasily
   彼かれはその手品てじなを難なん無なくやって見みせた。↗

   He performed the trick with ease.

• Synonym軽々かるがるNeutralLightly, effortlessly; stresses how effortless the action looks. Often in 「軽々と持ち上げる」, lifting something with ease.
• Synonym楽々らくらくNeutralComfortably, with ease; also for living a relaxed, carefree life. Stresses feeling at ease rather than the absence of difficulty.
• SynonymあっさりCasualColloquial. Briskly, readily, as in 「あっさり断る」 or 「あっさり勝つ」; also describes light flavors and a simple, plain style.
• SynonymやすやすNeutralWith ease and no trouble; neutral in tone, as in 「易々と課題をこなす」. Also in 「易々と負けない」, not being beaten easily.
• Synonym手も無くてもなくNeutralWithout any trouble; rare in speech. The closest in meaning to 「難なく」.
• Synonym苦もなくくもなくNeutralWithout effort or toil; stresses that no hardship went into it. Nearly synonymous with 「難なく」.
• SynonymすんなりNeutralSmoothly, without resistance; stresses progress going well or meeting no opposition, not the ease of the task itself.
• Synonym安々やすやすWrittenWritten style, and rare even there; calmly, without incident, or with ease. Homophonous with 「易々」.
• SynonymわけなくCasualColloquial. Without effort; even a hard problem can be 「訳なく解く」. Stresses that doing it takes no effort.
• Antonym難しくNeutralThe continuative (adverbial) form of the adjective 難しい. It cannot be paired directly with 「難なく」 to mean doing something with effort.
• Antonym困難にWrittenWritten/formal prose. Describes being in a difficult state; 「困難にやり遂げる」 is not usual — say 「苦労して」 for finishing with effort.

Use 「難なく」 or 「苦もなく」 when you manage something without difficulty; 「楽々」 or 「軽々」 for doing it with ease; 「あっさり」 for brisk, decisive ease; 「すんなり」 for things going smoothly. To say you did it with effort, use 「苦労して」.

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

1. 難儀なんぎすること無なく。容易たやすく。