1. gratitude - Noun
2. gratitude - Adjective
The state of being grateful; warm and friendly feeling toward a benefactor; kindness awakened by a favor received; thankfulness.
Source: Webster's dictionaryGratitude is the sign of noble souls. Aesop
Gratitude is not only the greatest of virtues, but the parent of all the others. Cicero
Gratitude is the memory of the heart. Italian Proverb
Nothing fades as quickly as gratitude... French Proverb
Turkeys, parrots, and hares don't know what gratitude is. Hindi Proverb