This is the 9394th most frequent Russian word.
тихоном
The Russian word "тихоном" does not exist. Perhaps you meant "тихоня," which means "a quiet, reserved, or shy person."
Used as a noun meaning a person who is quiet, polite, and reserved.
Он медленно шел по улице, думая о своем, будто тихоном.
He slowly walked down the street, lost in thought, as if a quiet man.
Used as an adverb implying the manner of action: quietly, stealthily.
Дети играли в прятки, и младший прятался совсем тихоном за кустом.
The children played hide-and-seek, and the youngest hid very quietly behind the bush.
Used as an adverb expressing an action happening softly or gently.