backlog

1 of 2

noun

back·​log ˈbak-ˌlȯg 

-ˌläg

1

: a large log at the back of a hearth fire

2

: an accumulation of tasks unperformed or materials not processed

a backlog of court cases

backlog

2 of 2

verb

backlogged; backlogging; backlogs

: accumulate

Examples of backlog in a Sentence

Noun

We have a huge backlog of orders to be filled.

Recent Examples on the Web

Noun

For now, the CSC — a startup with just three employees and a backlog of high-dollar pay-for-play contracts — doesn’t have the manpower to police a system with more loopholes than a congressional ethics policy. —Mike Bianchi, The Orlando Sentinel, 5 Aug. 2025

The referendum would raise billions of dollars to overhaul the region’s transportation system by expanding rail lines, addressing a backlog of road projects and improving the bus system. —Charlotte Observer, 3 Aug. 2025

Verb

For the 2024 tax season, Collins urged the IRS to make clearing up its identity theft backlog a higher priority. —Michelle Singletary, Washington Post, 12 Jan. 2024

Related:Infractions backlog likely to push Louisville basketball's case into a sixth year NCAA's Complex Case Unit's allegations against Louisville men's basketball: 1. —Tim Sullivan, The Courier-Journal, 28 Mar. 2022

Word History

First Known Use

Noun

1684, in the meaning defined at sense 1

Verb

1963, in the meaning defined above

Rhymes for backlog

• agog
• bulldog
• bullfrog
• eclogue
• eggnog
• groundhog
• hedgehog
• leapfrog
• prolog
• sheepdog
• watchdog
• analog

Kids Definition

backlog

noun

back·​log

-ˌlȯg,

-ˌläg

1

: a large log at the back of a fire in a fireplace

2

: an accumulation of tasks that have not been finished