fill out

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)

Idioms and Phrases

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]

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

Funny side characters—the enlightened mom who looks down on people who use diapers; the chatty wife who will not stop talking about her husband’s vasectomy—fill out a believable cast.

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Right now, they are barely adults; they still call me to ask for their Social Security numbers every time they have to fill out a form.

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Christopher fills out a survey from Altadena Baptist Church asking community members for their input on rebuilding of the church after the Eaton fire.

Read more on Los Angeles Times

Under draft plans announced this summer, 18-year-olds will be asked to fill out an online questionnaire about their background and willingness to serve for at least six months.

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Related Words

• round out