1. (adjective) cool and formal in manner

• restrained
• reticent

1. (adjective) unsusceptible to or destitute of or showing no emotion

• chilly
• dry
• impassive
• stolid
• philosophic
• philosophical
• phlegmatic
• phlegmatical
• stoic
• stoical
• unblinking

2. (adjective) cool and formal in manner

• undemonstrative

1. (adjective) unsusceptible to or destitute of or showing no emotion

• cool
• passionless
• unaffected
• unmoved
• untouched
• unmoving

1. (adjective) unsusceptible to or destitute of or showing no emotion

• emotional

1. (adjective) unsusceptible to or destitute of or showing no emotion

• emotionlessness
• unemotionality