Sandbagging is another term for slowplaying. It means to either check or bet weakly when you have a strong hand. Sandbagging also can be a synonym for check-raising.
Holding back and calling despite the fact that you have a very good hand, usually to disguise strength, provoke bluffs, and to check-raise.
Playing conservative even though you have a good hand to fool other players.
Playing a very strong hand passively in the hope of inducing more action and provoke costly bluffs.
Another term for slow-playing an opponent with a monster hand.
Holding back and calling when you have a good hand