stalking

fe’l verb

1. To (try to) follow or contact someone constantly, often resulting in harassment.Wp My ex-girlfriend is stalking me.
2. To approach slowly and quietly in order not to be discovered when getting closer.
3. To walk slowly and cautiously; to walk in a stealthy, noiseless manner.
4. To walk behind something, such as a screen, for the purpose of approaching game; to proceed under cover.

ot noun

1. The act of going stealthily.
2. Hunting for game by moving silently and stealthily or by waiting in ambush.
3. The crime of following or harassing another person, causing him or her to fear death or injury.
4. The removal of stalks from bunches of grapes prior to winemaking.