BACKLOGGED
Verb
backlogged
simple past tense and past participle of backlog
Adjective
backlogged (comparative more backlogged, superlative most backlogged)
Having an excessive list of tasks to do, especially tasks that should have already been performed.
Source: Wiktionary
BACKLOG
Back"log`, n. Etym: [Back, a. + log.]
Definition: A large stick of wood, forming the of a fire on the hearth.
[U.S.]
There was first a backlog, from fifteen to four and twenty inches in
diameter and five feet long, imbedded in the ashes. S. G. Goodrich.
Source: Webster’s Unabridged Dictionary 1913 Edition