How to say "efficiently" in Japanese

• 手際よくてぎわよくCommon
  adverbThe core choice for the sense of doing work efficiently and skillfully, without wasted time or effort. Nuance includes adept, adroit handling, as of an experienced person carrying out a task smoothly.
  恵子けいこが手際てぎわよく食器しょっきを重かさねて、シンクへ運はこんでゆく。↗

  Keiko deftly piles up the cutlery and takes them to the sink.
• キビキビ
  adverb (with と), suru verbCovers efficiently only in the sense of brisk, energetic action; it is an onomatopoeic word describing lively, no-nonsense movement or manner rather than the outcome being efficient. It is a less common word.
  彼かれの娘むすめは動作どうさがきびきびしている。↗

  His daughter is quick in her movements.
• さくっ
  adverb (with と)Rarely the word you want for efficient in the sense of skillful, economical work; it really means quickly, promptly, or simply. Use it only when the efficiency involved is just getting something done fast or without fuss.

Use 「手際よく」 for genuinely efficient, skillful work; 「キビキビ」 for brisk, energetic movement and manner; 「さくっ」 mainly means quickly or simply, so it only fits when efficiency means getting something done fast.

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

• 手際良くてぎわよくefficiently
• きびきびbriskly
• さくっquickly