folder

noun

fold·​er ˈfōl-dər 

1

: one that folds

2

: a folded printed circular

3

a

: a folded cover or large envelope for holding or filing loose papers

b

: an organizational element of a computer operating system used to group files or other folders together

Synonyms of folder

• booklet
• brochure
• leaflet
• flyer
• pamphlet

Examples of folder in a Sentence

a folder offering tips for heating one's home efficiently

Recent Examples on the Web

Unlike a read receipt, which only fires when a message is manually opened, a delivery receipt triggers automatically—even if the incoming text is filtered straight to a spam folder. — Justyn Newman, PC Magazine, 9 Sep. 2026

Photo by Steve Peck When the plane hit Peck has a file folder filled with memories related to the attack on the World Trade Center. — Dennis Valera, CBS News, 8 Sep. 2026

Investigators found a video in a hidden folder on Shelby’s phone, dated May 19, 2025, which was alleged to show Jeremy striking, choking and repeatedly punching his wife, as well as grabbing her by the throat and threatening to kill her, per KBSI. — Adam England, PEOPLE, 24 Aug. 2026

That loop, notes in, structured memory out, is a digital brain with a vendor database instead of a folder of Markdown. — Josipa Majic Predin, Forbes.com, 22 Aug. 2026

Word History

First Known Use

1552, in the meaning defined at sense 1

Phrases Containing folder

• sub-folder

Rhymes for folder

• bolder
• bowlder
• colder
• golder
• holder
• molder
• moulder
• older
• polder
• shoulder
• beholder
• bondholder

Kids Definition

folder

noun

fold·​er ˈfōl-dər 

1

: one that folds

2

: a printed circular of folded sheets

3

a

: a folded cover or large envelope for holding loose papers

b

: an element of a computer operating system used to group and organize files