To Work With a Client Free of Charge

This page is the CodyCross answer for the clue below from Street Fair, Group 1304, Puzzle 4 (Interactive Learning).

Question is: To Work With a Client Free of Charge

and the answer is: PROBONO

Word Meaning:

PRO BONO — (law, medicine) Without charging a fee, done without fee, generally for clients or patients of limited means.

Definitions from Wiktionary.