How to say "do-it-yourself" in Japanese

• ＤＩＹディー・アイ・ワイ
  nounThe loanword for do-it-yourself as a general activity or hobby: making, repairing, and improving things yourself rather than paying someone to do it. Natural in everyday talk about home projects and handiwork.
• ドゥーイットユアセルフ
  nounA sound-for-sound katakana spelling of the English phrase itself. Seldom the word you want for the activity — ＤＩＹ or 日曜大工 covers that; reach for this only when you want the English wording spelled out.
• 日曜大工にちようだいく
  nounDo-it-yourself as weekend carpentry: the hobby of building and repairing things at home on one's days off, with an amateur, hands-on feel. Also refers to the person who does it, a 'weekend carpenter'.
  彼かれは日曜にちよう大工だいくで犬小屋いぬごやを作つくった。↗

  As a do-it-yourselfer, he made a doghouse.

For do-it-yourself as a general hobby or activity, ＤＩＹ is the word; for the hands-on weekend-carpentry sense, or the hobbyist, use 日曜大工; 「ドゥーイットユアセルフ」 merely spells the English phrase out and is seldom what you want.

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

• ＤＩＹディー・アイ・ワイDIY
• ドゥーイットユアセルフdo-it-yourself
• 日曜大工にちようだいくweekend carpentry