labile /lāˈbīl or (esp in US) lāˈbəl/

1. Unstable
2. Apt to slip or change

• what possesses
• what price…
• what reck
• what remedy
• what's biting you
• what's cooking
• what's eating you
• what's-her-name
• what's-his-
• what's-his-name
• whatsis
• whatsit
• whatsits
• what's-its-name
• whatsits-name
• what's more
• what's new
• whatso
• whatsoe'er
• whatsoever
• whatsomever
• what's the big idea
• what's the damage
• what's the odds
• what's to do