| 1. | the state, quality, or an instance of being simple. |
| 2. | freedom from complexity, intricacy, or division into parts: an organism of great simplicity. |
| 3. | absence of luxury, pretentiousness, ornament, etc.; plainness: a life of simplicity. |
| 4. | freedom from deceit or guile; sincerity; artlessness; naturalness: a simplicity of manner. |
| 5. | lack of mental acuteness or shrewdness: Politics is not a field for simplicity about human nature. |