Being congruous means things fit together and form a harmonious whole. Synonyms for this word could be consistent, in agreement, compatible, coherent, and logical. Other words that convey the same idea are harmonious, complementary, congruent, and suitable. When we use related words like these, we describe something that is integrated and well-balanced, where all the parts work together in the same direction and purpose. We use these words to describe things like clothing, furniture, colors, and even people who have matching personalities. Using synonyms for "be congruous" enriches our language and helps us better describe the world around us.