Simply, unjust gains in trade or business, generally through exploitation.

Government officials are commanded to be content with their pay and not to use their positions for unjust gain.

The defendants made a large profit out of the transactions and they were required to account to the complainant, as surviving partner of the deceased, for their unjust gains.

On his deathbed remorse seized him; he bestowed his goods on the poor, restored unjust gains, freed his slaves, and read through the Qur'an every three days until his death.

In 1994, Gary Eitel filed a qui tam civil lawsuit on behalf of the Federal government against Reagan, the six airtanker operators, and a number of other defendants, which alleged fraud and the unjust gain of enrichment through the exchange program.