As a whole, I am both safe and secure. Behead me, and I become a place of meeting. Behead me again, and I am the partner of ready. Restore me, and I become the domain of beasts. What am I?

Why this works

This riddle plays with the concept of "beheading," which means removing the first letter of the word to uncover new meanings. Starting with "stable," which denotes something safe and secure, beheading it brings us to "table," a common place for meetings. Beheading "table" again leads us to "able," which pairs with "ready" to imply capability. Finally, restoring it back to "stable" brings us to a domain associated with beasts, as stables are where animals like horses are kept. Each step cleverly reveals a new word while maintaining a connection to the original meaning!