General Antonyms:
* Appear: To come into view.
* Show: To make oneself visible.
* Reveal: To make known or visible.
* Surface: To emerge from hiding.
* Come out: To leave hiding.
* Stand out: To be conspicuous.
Antonyms for "lurk" in the sense of waiting in secret:
* Approach: To move towards.
* Engage: To interact openly.
* Confron: To face directly.
Antonyms for "lurk" in the sense of being dangerous or threatening:
* Protect: To keep safe from harm.
* Help: To give assistance.
* Encourage: To support or inspire.
The best antonym for "lurk" will depend on the specific context in which you are using the word.