1. (adjective) cool and formal in manner

• reticent
• unemotional

2. (adjective) marked by avoidance of extravagance or extremes

• moderate

3. (adjective) not showy or obtrusive

• quiet

4. (adjective) prudent

• guarded

1. (adjective) cool and formal in manner

• undemonstrative

2. (adjective) under restraint

• close
• low-key
• low-keyed
• subdued
• unexpansive

3. (adjective) marked by avoidance of extravagance or extremes

• temperate

4. (adjective) not showy or obtrusive

• unostentatious
• unpretending
• unpretentious

5. (adjective) prudent

• cautious

1. (adjective) under restraint

• controlled
• inhibited
• reserved

1. (adjective) marked by avoidance of extravagance or extremes

• moderateness
• moderation

1. (adjective) under restraint

• unrestrained