Let's show our gratitude to everyone on Thanksgiving Day.
Although I don't say it, I always appreciate my wife.
I would like to express my gratitude to all our clients. Without you, we would not be here.
You have feelings of apologizing. Strangely, this word means thanks and gratitude, though. Perhaps someone did something so nice for you that you want to apologize for how many nice things they're doing for you. You are this grateful to them!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.