〜直す naosu
〜直す（naosu）means “do ... again, redo, do ... over (correctly)”. Attached to a verb's masu-stem, 〜直す means doing that action over again, usually to fix or improve a result that wasn't satisfactory the first time. Formation: V（ます形）＋直す
do ... again, redo, do ... over (correctly)
N3Formation
V（ます形）＋直す
Explanation
Attached to a verb's masu-stem, 〜直す means doing that action over again, usually to fix or improve a result that wasn't satisfactory the first time. The 直す part conjugates as a normal u-verb.
Examples
Note
Different from 〜返す or simply repeating; 〜直す stresses redoing in order to correct or improve. Common: やり直す, 書き直す, 考え直す, 作り直す.
FAQ
〜直す — what does it mean and how is it used?
do ... again, redo, do ... over (correctly). Attached to a verb's masu-stem, 〜直す means doing that action over again, usually to fix or improve a result that wasn't satisfactory the first time. The 直す part conjugates as a normal u-verb.
〜直す — how do you form it?
V（ます形）＋直す
〜直す — any usage notes?
Different from 〜返す or simply repeating; 〜直す stresses redoing in order to correct or improve. Common: やり直す, 書き直す, 考え直す, 作り直す.