Akademik

restrained
adjective
1. cool and formal in manner (Freq. 2)
Syn: ↑reticent, ↑unemotional
Similar to: ↑undemonstrative
2. under restraint (Freq. 1)
Ant: ↑unrestrained
Similar to: ↑close, ↑low-key, ↑low-keyed, ↑subdued, ↑unexpansive
See Also: ↑controlled, ↑inhibited, ↑reserved
3. not showy or obtrusive
-

clothes in quiet good taste

Syn: ↑quiet
Similar to: ↑unostentatious, ↑unpretentious, ↑unpretending
4. marked by avoidance of extravagance or extremes
-

moderate in his demands

-

restrained in his response

Syn: ↑moderate
Similar to: ↑temperate
Derivationally related forms: ↑moderateness (for: ↑moderate)
5. prudent
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guarded optimism

Syn: ↑guarded
Similar to: ↑cautious

Useful english dictionary. 2012.