まこと
信 誠 実 truth faith fidelity sincerity trust confidence reliance devotion

まことしやかに
実しやかに 誠しやかに as if it were true with seeming truth plausibly

まことに
真に truly actually really 誠に indeed really absolutely

まことのこころ
実の心 one's real intention

まことをつくす
誠を尽くす to do with sincerity

まこも
真菰 wild rice