Antonyms for the phrase "gambled away" would include words and phrases reflecting responsible and wise financial behavior. Some potential options might include: saving responsibly, investing wisely, living within one's means, planning for the future, making sound financial decisions, and exercising financial discipline. These antonyms reflect the opposite of the impulsive or reckless behavior often implied by the phrase "gambled away," which suggests frittering away money on risky bets, games of chance, or other speculative ventures. By contrast, the antonyms suggest behaviors that are grounded in careful planning, prudence, and long-term thinking.