- to make a choice; choose (usually followed by for).
- to decide to make use of or take part in something: To receive automatic updates, opt in under the email notification section.
- to decide to withdraw from or not take part in something: You can opt out of the pension plan, but you lose the employer and government contribution.
- optative.
- optical.
- optician.
- optics.
- optional.
- to show preference (for) or choose (to do something)
