Describes a person, attitude, or action that is genuine, trustworthy, and without deceit. Often used for character, promises, and relationships.
He has a sincere character and is trusted by everyone.
It is important to approach work with sincerity.
He is always faithful to his girlfriend.
He dealt with the customer sincerely.
She has a reputation for being a sincere person.
誠実 is a common adjective/noun meaning 'sincere, faithful' as a personal virtue, while 実 in this sense is the bare noun used in set expressions like 実を尽くす.
誠実 is a broad term for sincerity and honesty in everyday dealings, while 節操 specifically emphasizes steadfast adherence to one's moral principles under pressure.
誠実 is a common, everyday word for sincerity and honesty in one's personal character, while 信義 is a more formal term stressing faithfulness to promises and obligations.
誠実 is a na-adjective/noun describing a sincere, honest character, while 誠 is the noun naming that quality of sincerity itself.
誠実 is a na-adjective describing a person's honest and faithful character, while 誠意 is a noun referring to the sincere attitude or intention itself.
忠誠 implies allegiance or devotion to someone or something, while 誠実 describes a person's sincere and honest character without necessarily implying loyalty to an entity.
誠実 means sincere and honest in modern Japanese, while まめ meaning faithful is dated and has largely been replaced by 誠実 or 忠実.
誠実 describes a person's sincere, honest character, while 信 can refer either to that same quality of good faith or to the trust it earns from others.
誠実 emphasizes sincerity and faithfulness in dealing with others, while 善良 emphasizes an innately good, honest character.
誠実 describes an honest, faithful character or attitude in general, while 真心 refers specifically to the warm sincerity behind a particular act or gift.