Wordnet 3.0
ADJECTIVE (3)
1. 
 not physically disturbed or set in motion; 
2. 
 not agitated or disturbed emotionally; 
3. 
 not agitated; 
 without losing self-possession; 
- Example: "spoke in a calm voice"- Example: "remained calm throughout the uproar"- Example: "he remained serene in the midst of turbulence"- Example: "a serene expression on her face"- Example: "she became more tranquil"- Example: "tranquil life in the country"[syn: calm, unagitated, serene, tranquil]
WordNet (r) 3.0 (2006):
unagitated
    adj 1: not physically disturbed or set in motion [ant:
           agitated]
    2: not agitated or disturbed emotionally [ant: agitated]
    3: not agitated; without losing self-possession; "spoke in a
       calm voice"; "remained calm throughout the uproar"; "he
       remained serene in the midst of turbulence"; "a serene
       expression on her face"; "she became more tranquil";
       "tranquil life in the country" [syn: calm, unagitated,
       serene, tranquil]