one's personal thoughts

private life, personal life

illegitimacy (being born out of wedlock)

a privately-owned ricefield, especially one under the historical 律令 (Ritsuryō) system

personal grudge

Kyūjitai form of 私鉄 (“private railway”)

manipulation (as in a device) / manipulation (as in a person): deception, taking someone in / getting on someone's right side; humoring someone; an effort to please someone

thulium, Tm

angling; fishing using a pole. / change (money given back when a customer hands over more than the exact price of an item) / (Internet) trolling

fishing pond, in common, artificial fishing place