hey

Illicit: illegal
Al Capone is said to be involved in many illegal activities, he was arrested for tax evasion.

heyday: pinnacle, zenith
During the Heyday of Test Cricket, patience and endurance were the post valued traits of the player.

Entice: tempt
The ambiance of  Vegas can entice a teetotaler to give up his vow.

aphorism:  maxim, short saying,
Famed philosophers are known for their aphorisms.

Squelch: suppress
He squelched her hopes of getting a pet.