Definition of opt in English:

opt

Syllabification: opt
Pronunciation: /äpt
 
/

verb

[no object]
Make a choice from a range of possibilities: consumers will opt for low-priced goods [with infinitive]: students opting to continue with physics
More example sentences
  • It also means exercising regularly and opting for active living choices rather than the lazy ones.
  • Parents opting for single-sex schools take other factors into account, though.
  • Fewer students than ever are opting to study maths at a higher level.
Synonyms
choose, select, pick (out), decide on, go for, settle on, take

Origin

late 19th century: from French opter, from Latin optare 'choose, wish'.

Phrasal verbs

opt out

Choose not to participate in or carry on with something: they had both opted out of the medical plan
More example sentences
  • Last spring, he opted out of football drills and chose instead to pitch for the USC baseball team, taking the hill in nine games.
  • A little-debated provision in the 1996 welfare reform law mandates a lifetime ban on welfare and food stamps for drug offenders, although New York is one of eight states that have opted out of the ban.
  • After the arrangements were made, Love opted out of the event altogether, as she reportedly ‘missed her plane’ from Los Angeles.

Definition of opt in:

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Pronunciation: ˈbɪmb(ə)l
verb
walk or travel at a leisurely pace