衷心(ちゅうしん)

from the bottom of one's heart; sincerely

苦衷(くちゅう)

distress; personal troubles

衷情(ちゅうじょう)

true feelings; innermost feelings

折衷(せっちゅう)

compromise; eclectic combination

和洋折衷(わようせっちゅう)

combination of Japanese and Western styles

由衷(ゆうちゅう)

from the bottom of one's heart; sincerely

微衷(びちゅう)

one's humble opinion; one's sincere feelings

丹衷(たんちゅう)

sincere feelings; devotion

由衷(ゆうちゅう)の感謝(かんしゃ)を申(もう)し上(あ)げます。

I offer my heartfelt thanks.

彼(かれ)の苦衷(くじゅう)を察(さっ)してください。

Please understand his difficult circumstances.