反対|はんたいhantai[0]heiban (flat)

1. suru verb, intransitive verb, no-adjective, na-adjectiveopposition; resistance; antagonism; hostility; objection; dissent
   私は、その請求書せいきゅうしょを払はらう事ことに反対はんたいした。↗

   I objected to paying the bill.
2. no-adjectivereverse; opposite; inverse; contrary

• Synonym抗議こうぎWrittenA formal protest against improper conduct, e.g. 「抗議デモ」; carries more confrontational force than 「反対」. Written/formal word.
• Synonym反発はんぱつNeutralDislike-driven resistance to someone's words or actions, e.g. 「反発を招く」.
• Synonym異議いぎWrittenA formally raised objection, e.g. 「異議あり」; typical of meetings and courtrooms. Written/formal word.
• Synonym異論いろんWrittenA differing opinion or view, e.g. 「異論はない」; gentler in tone. Written/formal word.
• Synonym異存いぞんWrittenAn objection, nearly always in the negative 「異存はない」 to state that one has none, i.e. agreement. Written/formal word.
• SynonymあべこべCasualColloquial word for things being reversed or swapped around, e.g. 「靴をあべこべに履く」.
• Synonym逆ぎゃくNeutralReverse or inverted order, direction or position; mostly used as a prefix, as in 「逆さま」「逆立ち」.
• Synonym正反対せいはんたいNeutralExactly, completely opposite; a stronger claim than 「反対」 itself.
• Synonym対抗たいこうNeutralRivaling an opponent in order to win, e.g. 「対抗意識」; the focus is on competition.
• Related反抗はんこうNeutralDisobedience toward elders or authority, e.g. 「親に反抗する」; the focus is on rebelliousness.
• Related抵抗ていこうNeutralHolding back an outside force or resisting; also covers psychological aversion, as in 「抵抗がある」.
• Related反論はんろんWrittenA counterargument directed at someone's opinion, e.g. 「反論の余地がない」; focuses on verbal rebuttal. Written/formal word.
• Related楯突くたてつくCasualColloquial for defying a superior or someone stronger, e.g. 「上司に楯突く」; tinged with insubordination.
• Related歯向かうはむかうCasualColloquial for striking back at the strong, e.g. 「親に歯向かう」; carries a rebellious coloring.
• Related争うあらそうWrittenThe same word 「抗う」(あらがう) as above; also used for going against trends or commands, e.g. 「時代に抗う」. Leans written/formal.
• Related戦うたたかうNeutralFighting an opponent or battling difficulties; the focus is on action.
• Related抗弁こうべんWrittenRebutting or pleading against the other side in a dispute or lawsuit; mostly legal usage. Written/formal word.
• Related敵対てきたいWrittenTreating the other party as an enemy, e.g. 「敵対関係」; carries hostility. Written/formal word.
• Related抗うあらがうWrittenWritten/formal verb for stubbornly resisting fate or the current of the times, e.g. 「運命に抗う」.
• Related逆さかNeutralReverse or inverted order, direction or position; mostly used as a prefix, as in 「逆さま」「逆立ち」.
• Antonym賛成さんせいNeutralAntonym: approving an opinion or proposal — the direct opposite of 「反対」.
• Antonym同意どういNeutralAntonym: agreeing or consenting; also used when meanings are the same.
• Antonym賛同さんどうWrittenAntonym: endorsing another person's opinion; leans written/formal.

For opposing something or being the opposite, 「反対」 is the default. To lodge a formal objection, use 「抗議」 or 「異議」; to rebut an argument, 「反論」; for dislike-driven resistance, 「反発」; for defying authority, 「反抗」; for exactly the opposite, 「正反対」. To agree is 「賛成」.

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

1. 対たいになるものの一方いっぽう。対義たいぎ的てきなもの。
2. あるものに対たいして位置いちや向むき、順序じゅんじょ、ありかた、言動げんどうなどが逆ぎゃくの関係かんけいにあること。対称的たいしょうてき、また対照的たいしょうてきであること。
3. 予想よそうや意図いとと逆ぎゃくの結果けっかになること。
4. ある命題めいだいに対たいして否定ひていを主張しゅちょうすること。提案ていあんなどに否定的ひていてきな意思いし表示ひょうじをすること。
5. 運動うんどうの方向ほうこうが逆転ぎゃくてんする、逆方向ぎゃくほうこうに作用さようする。
6. ある命題めいだいに対たいして否定ひていを主張しゅちょうする。