1To be contrary to or to go against something; to contradict or run counter to a rule, expectation, or statement.
彼の行動は会社の方針に反する。
His actions go against the company's policy.
この結果は予想に反するものだった。
These results were contrary to expectations.
その発言は事実に反する可能性がある。
That statement may contradict the facts.
2To infringe upon or violate (laws, rules, rights); to transgress established limits.
これらの行為は契約条項に反するため、処罰の対象となる。
These acts violate the contract terms and may be subject to penalties.
個人情報の取り扱いが法律に反すると問題になる。
Handling personal information in a way that breaches the law becomes a problem.
3To disobey or defy orders or teachings; to rebel or revolt against authority or established instruction.
兵士たちが上官に反する事件が報告された。
There were reports of soldiers rebelling against their superior officers.
弟は親の期待に反して音楽の道を選んだ。
My younger brother chose music, going against our parents' expectations.