might makes right - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Superior strength can enforce one's will or dictate justice, as in The generals dismissed the parliament and imprisoned the premier—might makes right in that country, or The big boys wouldn't let the little ones use the basketball, a case of might makes right. This expression was first recorded in English about 1327.