Nouns

(n)slowdown, lag, retardationthe act of slowing down or falling behind
(n)interim, meantime, meanwhile, lagthe time between one event, process, or period and another“meanwhile the socialists are running the government”
(n)stave, lagone of several thin slats of wood forming the sides of a barrel or bucket

Verbs

(v)lag, dawdle, fall back, fall behindhang (back) or fall (behind) in movement, progress, development, etc.
(v)imprison, incarcerate, lag, immure, put behind bars, jail, jug, gaol, put away, remandlock up or confine, in or as in a jail“The suspects were imprisoned without trial”, “the murderer was incarcerated for the rest of his life”
(v)lagthrow or pitch at a mark, as with coins
(v)lagcover with lagging to prevent heat loss“lag pipes”