Word

忠誠を尽くす

ちゅうせいをつくす
to be loyal to; to serve; to offer allegiance
Word

忠誠を誓う

ちゅうせいをちかう
to pledge allegiance; to swear an oath of allegiance; to take an oath of allegiance
Word

忠誠心

ちゅうせいしん
loyalty; faithfulness
Word

実しやか

真しやか、誠しやか
まことしやか
plausible (e.g. of a rumour); believable (e.g. of a story); specious (e.g. of an argument); credible (e.g. of a lie); looking very like the truth
Word

至誠天に通ず

exp
しせいてんにつうず
Sincerity can move heaven
Word

誠照寺派

じょうしょうじは
Joushouji sect (of Shin Buddhism)