If "stalk" refers to the act of following someone secretly:
* Ignore: This is the opposite of actively following someone.
* Avoid: This means to deliberately stay away from someone.
* Protect: This implies actively keeping someone safe from being stalked.
* Support: This suggests offering emotional or practical help to someone who is being stalked.
If "stalk" refers to the stem of a plant:
* Blossom: This refers to the flower of a plant.
* Branch: This refers to a woody part of a plant that grows from the trunk.
* Leaf: This is a flat, green part of a plant that grows from the stem.
* Root: This refers to the underground part of a plant that absorbs water and nutrients.
If "stalk" refers to the act of hunting or pursuing prey:
* Release: This implies letting the prey go free.
* Protect: This means to keep the prey safe from being hunted.
* Nurture: This suggests providing care and support to the prey.
Please provide more context about how "stalk" is being used so I can give you a more specific antonym.