Sincere advice given for someone's good; frank counsel that may be harsh but well-intentioned.
上司の忠言を受け入れて、計画を修正した。
I accepted my boss's sincere advice and modified the plan.
親友からの忠言は時に厳しく聞こえるが、感謝すべきだ。
A friend's sincere advice can sometimes sound harsh, but it should be appreciated.
忠言を聞く耳を持つことは成長に重要だ。
Having an ear for sincere advice is important for growth.