spying

verb

1. (form-of, gerund, participle, present)present participle and gerund of spy

noun

1. (countable, uncountable)espionage; the act of secretly gathering information

   “There are two ways in which the obsessive character of jealousy tends to exert itself: one is in the need to know, the endless tests and investigations and spyings that are so characteristic of jealousy.”