Wiktionary
subbed in
vb. (en-pastsub in)
Usage examples of "subbed in".
But Yeager got sweep-up jobs, subbed in for this and that unskilled labor when somebody got sick.
Somebody started a loud and rowdy song, that subbed in the word Belize, and he found himself with a grin on his face as Finity's End came free and powered back from dock.