It os often translated as "Thank you!" but in this word, there is nothing that says "THANK" or "You". It is just a word. I think this I the most beautiful word in Japanese.
One year ago today, I had to put Doan my dog, Pompom. After one year, I miss him but most of all I just want to day Arigatō for 15 years. I hoe I will meet him again.