Gratitude (or Appreciation, Thankfulness)… 1. The state of being grateful (Showing appreciation, being thankful, or recognizing the importance of a source of pleasure). 2. A just valuation or estimate of merit, worth, weight, etc.; recognition of excellence. 3. Accurate perception; true estimation; as, an appreciation of the difficulties before us; an appreciation of colors. 4. A rise in value;—opposed to depreciation.