Creep (verb)

1. To move slowly and quietly, or with the body close to the ground.
2. To move in a stealthy or furtive manner.
3. To cause someone to feel fear or unease.

Origin:

From middle english crepen, from old english crepian ("to creep"), from proto-germanic *krepijaną ("to creep"), from proto-indo-european *grep- ("to scratch, scrap.e")

Examples:

1. The cat crept across the floor.
2. The thief crept into the house.
3. The shadows crept across the room.
4. The idea crept into his mind.
5. The fear crept over her.