expression, adverb
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.
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'.