The word "capable of appreciating" has several synonyms that are commonly used in the English language. One such synonym is "able to recognize" which means to have the ability to acknowledge or perceive something. Another synonym is "grasp" which means to understand or comprehend something. "Comprehend" is another synonym which refers to the ability to understand or grasp something fully. "Discern" is also a synonym which means to recognize the difference between things or to perceive something with clarity. Additionally, "perceive" is another synonym for "capable of appreciating" which refers to the ability to become aware of something through one's senses or intuition.