How to say "adjust" in Japanese

• 正すただすCommon
  godan verb, transitive verbCovers 'adjust' in the sense of straightening something into proper form, such as one's posture or collar; its basic sense is 'straighten'. E.g. straightening your posture when you catch yourself slouching.
• 繕うつくろうJLPT N1approx.Common
  godan verb, transitive verbCovers 'adjust' in the sense of fixing or tidying one's appearance — hair, clothes — so it looks neat and presentable; its basic sense is 'fix' or 'groom'. E.g. tidying your hair and clothes before going out.
  猿さるたちは互たがいに毛繕けづくろいし合あっている。↗

  The monkeys are grooming each other.

For 'adjust' in the physical sense of making one's posture or appearance neat, use 「正す」 to straighten something into proper alignment (posture, collar) and 「繕う」 to fix up or tidy hair, clothes, and overall appearance.

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

• 補整ほせいadjust (by supplementing)
• かき合わせるかきあわせるto pull together with the hands
• 整えるととのえるto adjust
• 正すただすto straighten (one's posture, collar, etc.)
• 繕うつくろうto fix (hair, clothes, appearance, etc.)
• 引き合わせるひきあわせるto adjust