How to say "doodle" in Japanese

• 落書きらくがきCommon
  noun, suru verb, transitive verb, intransitive verbCovers 'doodle' as casual scribbling or idle drawing, and also scrawls or graffiti. The neutral, everyday choice whether the drawing is playful, careless, or unauthorized.
  その壁かべには一面いちめんに落書らくがきがあった。↗

  There were scribbles all along the wall.
• ｒｋｇｋらくがき
  noun, suru verbAn abbreviation of 落書き with the same senses, used as internet slang. Fine in casual online posts, but rare elsewhere; in speech or formal writing use the full word.

Use 「落書き」 for doodles or scribbles of any kind; ｒｋｇｋ is simply its internet-slang abbreviation, suited to casual online writing rather than everyday speech.

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

• 落書きらくがきscrawl
• ｒｋｇｋらくがきscrawl