wholeheartedly; with all one's heart; sincerely
Expresses doing something with genuine care and heartfelt sincerity. Often used in formal or emotional contexts, such as letters, speeches, or acts of kindness.
真心を込めてお礼の手紙を書きました。
I wrote a thank-you letter wholeheartedly.
彼女は真心を込めて料理を作ってくれた。
She cooked the meal with all her heart.
真心を込めて is a more formal, emphatic phrase meaning 'with utmost sincerity', while 心を込めて is the everyday way to say the same thing.
Standard kanji-kana mixed spelling.
Common variant with こめて in kana.
Variant with まごころ in kana.
Phrase composed of 真心 (true heart, sincerity) + を + 込めて (te-form of 込める, to put into). Literally 'putting one's true heart into it'.