demonstrative

mastery
UK /dɪˈmɒn.stɹə.tɪv/ US /dɪˈmɑn.stɹə.tɪv/adjnoun

card 1 of 8 · context meaning

Based on this sentence, how would you describe Marcus's emotional expression?

Unlike his brother, who is demonstrative and shows his feelings openly, Marcus is undemonstrative and prefers to keep emotions private.