noun
open operations (of a ninja)
Refers to ninja activities conducted openly, in contrast to 陰忍 (いんにん) which denotes covert operations. This is a specialized historical term.
See also: 陰忍
陽忍は、表向きの活動で敵を欺く忍術の一種だ。
Yōnin is a type of ninjutsu that deceives the enemy through overt activities.
忍者は時に陽忍として商人に扮し、情報を集めた。
Ninjas sometimes disguised themselves as merchants as part of yōnin to gather information.