Synonyms of work on

Verb

1. work at, work on, work

usage: to exert effort in order to do, make, or perform something; "the child worked at the multiplication table until she had it down cold"

2. work, work on, process, transform, transmute, transubstantiate

usage: shape, form, or improve a material; "work stone into tools"; "process iron"; "work the metal"