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Synonyms

fill out

British  

verb

  1. to make or become fuller, thicker, or rounder

    her figure has filled out since her marriage

  2. to make more substantial

    the writers were asked to fill their stories out

  3. (tr) to complete (a form, application, etc)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

fill out Idioms  
  1. Complete by supplying required information, especially in writing. For example, Please fill out the application form , or I don't quite understand this drawing, so fill out the details . [Late 1800s]

  2. Become enlarged, distended, rounded in outline. For example, The wind filled out the sails , or He's put on weight and really filled out . Applied to objects, this expression dates from about 1700, but to persons or animals becoming fatter, only from the late 1800s.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

She cites the Direct File system, which helped people fill out their taxes, and which saved taxpayers $6 million on tax preparation fees in 2024.

From The Wall Street Journal Aug. 2, 2026

Those requirements dictate what California teenagers learn long before they even fill out an application.

From Los Angeles Times Jul. 23, 2026

Or they can still fill out Form 4547 with the IRS here.

From MarketWatch Jul. 2, 2026

When he had to fill out paperwork, his wife was contacted even though all his details were on file.

From BBC Jun. 26, 2026

Henry took out a pen and began to fill out Julian’s evaluation.

From "The Secret History" by Donna Tartt

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