Meaning & readings

topic, subject

On’yomi ダイ

Origin

The character combines a radical meaning "head" or "face" (the 頁 component on the right) with a sound hint on the left that suggests the pronunciation. The idea is that a "topic" or "subject" is something that stands out or comes to the forefront—like a head or face appearing prominently. Over time, the character came to specifically mean the heading or main subject that sits at the top of a discussion, piece of writing, or problem. The component doesn't contribute to the meaning but rather helped readers know roughly how to pronounce the character.

AI-generated (claude-haiku-4-5), not yet reviewed. Formation type (automated guess): Phono-semantic (meaning + sound hint).

18 strokes

Components

  • sound hint bottom-left wrap
  • radical nyoc

A sound hint component points at the character’s pronunciation, not its meaning — don’t read a meaning into it.

Common words

  • 課題 かだい subject; theme
  • 議題 ぎだい topic of discussion; agenda
  • 主題 しゅだい subject; theme
  • 宿題 しゅくだい homework; assignment
  • 出題 しゅつだい setting a question (for an exam, quiz, etc.)
  • 題材 だいざい subject; theme
  • 題名 だいめい title; caption
  • 難題 なんだい difficult problem; challenge

Reference

Strokes
18
Kangxi radical
181
Grade
Grade 3 (Kyōiku)
Frequency rank
#96 (newspapers)
Former JLPT
level 3
Unicode
U+0984C