Big smiles, loud crying, jumping for joy, and making crazy art are all expressive, which is to effectively show feelings.
Anything that communicates thoughts or feelings is expressive. Expressive comes from the French word expres for "clear, plain.” It’s easy to read people who are expressive, their emotions are clear. Smiling, laughing, shouting, crying, and pouting are all expressive. So is art, whether it's music, sculpture, or writing. This is a word that applies to things that communicate. If you're not revealing how you feel, you're not being expressive.