説(と)く

とく
verb (godan)
to preach; to explain; to advocate
他動詞 transitivecommunication
See also: 解(と)く (solve, untie)
Conjugation
AffirmativeNegative
Present説(と)く説(と)かない
Present polite説(と)きます説(と)きません
Past説(と)いた説(と)かなかった
Past polite説(と)きました説(と)きませんでした
て form説(と)いて説(と)かなくて
ている present説(と)いている説(と)いていない
ている polite説(と)いています説(と)いていません
ている past説(と)いていた説(と)いていなかった
ている past polite説(と)いていました説(と)いていませんでした
Conditional ば説(と)けば説(と)かなければ
Conditional たら説(と)いたら説(と)かなかったら
Volitional説(と)こう—
Volitional polite説(と)きましょう—
Potential説(と)ける説(と)けない
Passive説(と)かれる説(と)かれない
Causative説(と)かせる説(と)かせない
Imperative説(と)け説(と)くな
1. to explain; to expound
To explain a concept, theory, or teaching in detail, often with the aim of persuading or educating.
To preach the teachings of Buddhism.
The teacher passionately explained the significance of history.
That book deeply expounds on the meaning of life.
2. to preach; to advocate
To actively promote or urge others to accept a particular idea, belief, or course of action.
To advocate the importance of peace.
He went around urging the people around him about the need for frugality.
It is our mission to advocate the importance of environmental protection to as many people as possible.

説(と)く is a transitive godan verb. It is distinct from the homophones 解(と)く (to solve, to untie) and 溶(と)く (to dissolve), which use different kanji.

ASPECT (ている):
説(と)いている indicates an ongoing process of teaching, preaching, or advocating.

Common patterns

  • Xを説(と)く (expound/preach X)
  • Xに説(と)く (preach to X)

Common collocations

Often carries a sense of moral or philosophical weight. It appears frequently in religious and philosophical contexts.