bubble in

English

Verb

bubble in (third-person singular simple present bubbles in, present participle bubbling in, simple past and past participle bubbled in)

1. (transitive) To mark a response on a form, particularly on a multiple-choice exam, by filling in a circular area (‘bubble’).
   • 2020, Staff of the Princeton Review, Cracking the AP Statistics Exam, 2020 edition, page 76:

     Once you’ve answered all of the questions on one or two pages, bubble in your answers before turning the page.

Anagrams

• Bubbline