内ない通つう者しゃ

noun

mole; whistle-blower; informant; betrayer

Refers to someone who secretly passes inside information to an opposing party, often in espionage, organizations, or criminal contexts.

• 警けい察さつは組そ織しきに内ない通つう者しゃがいることを突つき止とめた。

  The police discovered that there was a mole inside the organization.

noun

adulterer; adulteress

Rare, old-fashioned use for someone who commits adultery. Modern Japanese typically uses 不倫相手 or 浮気相手.

• 古ふるい小しょう説せつでは、内ない通つう者しゃという言こと葉ばが不ふ倫りんの相