Thankful/ˈθæŋkfl/ Definition 1 of 3Pro Tip 1/3Emotionally Deep Use 'thankful' to express a deep emotional response, not just for casual gratitude. After the support during hard times, I am deeply thankful to you. Pro Tip 2/3Not Thanking Someone When you’re just saying 'thank you', use 'thanks' or 'thank you', not 'thankful'. Thanks for the gift, not I'm thankful for the gift. Pro Tip 3/3Personal Gratitude 'Thankful' is often personal, used to show your individual gratitude to others. I'm thankful to my teacher for her guidance.