Main entry: variable
Definition: liable to or capable of change
Usage: rainfall in the tropics is notoriously variable; variable winds; variable expenses
Antonyms: invariable
Definition: not liable to or capable of change
Antonyms: certain
Definition: established beyond doubt or question; definitely known
Definition: having or feeling no doubt or uncertainty; confident and assured
Definition: certain to occur; destined or inevitable
Antonyms: unchangeable
Definition: not changeable or subject to change
Antonyms: settled
Definition: established in a desired position or place; not moving about
Antonyms: settled
Definition: established or decided beyond dispute or doubt
Main entry: variable, varying
Definition: marked by diversity or difference
Usage: the varying angles of roof slope; nature is infinitely variable
Main entry: variable
Definition: (used of a device) designed so that a property (as e.g. light) can be varied
Usage: a variable capacitor; variable filters in front of the mercury xenon lights
Antonyms: unadaptable
Definition: not adaptable