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

The rolling disruptions, mainly driven by severe maintenance backlogs and ageing infrastructure leaks, have forced businesses to pay for backup systems, adding to investments many companies have already made to shield from chronic power outages in recent years. —Tiisetso Motsoeneng, semafor.com, 1 June 2026

The company has 10 additional locations in backlog beyond its 34 open venues but sees the market as capable of supporting multiples of its current footprint. —Naman Ramachandran, Variety, 1 June 2026

Verb

Many Transportation Security Administration officers have gone unpaid, creating massive security line backlogs at a few major airports, including in Houston. —Dallas Morning News, 9 Mar. 2026

His court date was scheduled for 2027, a date far in the future because of the nation’s immigration courts backlog. —Lawrence Mower, Miami Herald, 26 Aug. 2025

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