Might is right; the proverb means that those with power, strength, or authority can dictate what is "right" or acceptable, often disregarding justice or morality. It suggests that the stronger party dictates rules, imposes their will, and is viewed as justified simply because they cannot be stopped.
Power determines legitimacy, not justice. The winner or strongest party dictates the rules.
The phrase was first recorded in English around 1327. It is often used to describe—and frequently criticize—situations where force prevails over fairness, such as in international conflicts, business bullying, or social injustice.
The phrase is also the title of a controversial 1890s work "Might is Right" Book by pseudo-name author Ragnar Red, often linked to Social Darwinism and a harsh, power-centric philosophy.
Political/International Conflict: "The dictator ignored the international court, proving that, in his view, might is right".
Schoolyard/Bullying: "The older boy stole the younger kid's lunch, a classic case of might makes right".
Business: "The corporation bought up all the smaller competitors, demonstrating that might is right in this industry."