How to say "supremacy" in Japanese

• 優越ゆうえつJLPT N1approx.Common
  noun, suru verb, intransitive verbThe default word for supremacy as being superior to others — outclassing rivals in ability, status, or quality. It denotes the state of standing above a counterpart.
  憲法けんぽうの規定きていに従したがい衆院しゅういんの議決ぎけつが参院さんいんに優越ゆうえつする。↗

  Under the Constitution, the lower chamber's resolutions override those of the upper chamber.
• 制覇せいはCommon
  noun, suru verb, transitive verbSupremacy understood as conquest or domination — having gained control over a whole field, arena, or domain. It stresses the winning of that dominance rather than a static state.
• 主権しゅけんJLPT N1approx.Common
  nounSupremacy only in the political sense: the sovereign authority of a state or nation. It is not the word for personal or competitive superiority.
  主権しゅけんは人民じんみんにある。↗

  Sovereignty resides in the people.
• 至上しじょうCommon
  no-adjectiveSupremacy as being above everything else, the highest of all; it presents something as paramount rather than pitting it against a specific rival.
• 優位ゆういJLPT N1approx.Common
  noun, na-adjectiveSupremacy as holding an advantageous or dominant position over someone — the upper hand, lead, or edge in a comparison or contest. It is relative, measured against a counterpart.
  広告こうこくに関かんしてはコークの方ほうが優位ゆういにたっている。↗

  When it comes to advertising, Coke is ahead of the game.

Use 優越 for superiority over others in general, 優位 for holding an advantage or upper hand, 制覇 for supremacy won by conquering a field, 主権 for a state's sovereign authority, and 至上 for being above all else.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 優越ゆうえつsupremacy
• 制覇せいはconquest
• 主権しゅけんsovereignty
• 至上しじょうsupremacy
• 優位ゆういpredominance
• 制圧せいあつgaining total control (of people or counties)
• 覇はsupremacy (over a nation)
• 優越性ゆうえつせいsupremacy
• 至上権しじょうけんsupremacy
• 秀しゅうpreeminence
• 支配権しはいけんright of control
• 覇業はぎょうdomination
• 絶待ぜつだいabsoluteness