Revocable (adjective)

Able to be withdrawn, canceled, or annulled.

Origin:

Derived from the verb "revoke" which comes from the latin "revocare" meaning "to call back, recall".

Examples:

1. The contract was revocable within the first 30 days.
2. The will was revocable as long as the writer was still alive.
3. The power of attorney was revocable at any time.
4. The license was revocable for cause.
5. The offer was revocable until accepted.