What is Thanks? Welcome to the first post in the study of thankfulness. If you're going to teach your kids to be thankful, they have to first understand what being thankful is. Let's start with the definition of thanks: THANKS, n. generally in the plural. Expression of gratitude; an acknowledgment made to express a sense of favor or kindness received. Gratitude is the feeling or sentiment excited by kindness; thanks are the expression of that sentiment. 'thanks.' Noah Webster's 1828 American Dictionary of the English Language. Thankfulness is an attitude of expressing gratitude. So what does gratitude mean? GRAT'ITUDE, n. An