When referring to a number or value, "round-figure" can be substituted with terms like "approximate," "rounded," "whole," or "even." These synonyms are often used to describe numbers that are simplified for convenience or estimation, or values that are easy to work with in mathematical calculations. Some other alternatives for "round-figure" in this context could include "ballpark," "near," "close," or "rough." Outside of numerical contexts, synonyms for "round-figure" may include "circular," "curved," "spherical," or "rotund," which can describe physical shapes or objects with a rounded or circular appearance.