What is the meaning of Creepy?

Moving by creeping along.

Producing an uneasy fearful sensation, as of things crawling over one's skin.

Causing discomfort or repulsion due to strange or eccentric behavior.

Causing discomfort through exhibiting sexually inappropriate behavior.

Feeling an uneasy fearful sensation; creeped out.

creepy (scary or sexually disconcerting)

Source: wiktionary.org