option /opˈshən/

1. An act of choosing
2. The power or right of choosing
3. A thing that is or may be chosen
4. An alternative for choice
5. A power (as of buying or selling at a fixed price) that may be exercised at will within a time-limit
6. A wish (obsolete)

To have or grant an option on something

opˈtional adjective

1. Left to choice
2. Not compulsory
3. Leaving to choice

• self-regulating
• self-regulation
• self-regulatory
• self-reliance
• self-reliant
• self-reliantly
• self-relying
• self-renunciation
• self-renunciations
• self-repeating
• self-repose
• self-repression
• self-reproach
• self-reproaches
• self-reproachful
• self-reproof
• self-reproofs
• self-reproving
• self-repugnance
• self-repugnances
• self-repugnant
• self-resemblance
• self-resemblances
• self-respect
• self-respectful