"Gambled on" is a phrase that refers to taking a risk or betting on a particular outcome without certainty of the result. Synonyms for "gambled on" include "took a chance on," "risked," "bet on," "put faith in," "banked on," "speculated," and "hazarded." These terms all convey a sense of uncertainty and the willingness to take a calculated risk in pursuit of a desired outcome. Whether it is in a personal or professional context, using synonyms for "gambled on" can help enhance the language used to express the idea of taking a risk.