1. the quality or state of being shadowy, dim, or indistinct
2. the quality of being mysterious, unclear, or lacking in substance

Examples

• The shadowiness of the forest made it difficult to see the path ahead.
• The old photograph’s shadowiness gave it an eerie quality.
• Critics complained about the shadowiness of the politician’s policy proposals.
• The shadowiness of her memories made it hard to recall exact details.
• The painting captured the shadowiness of twilight perfectly.
• The shadowiness of the evidence made the case difficult to prove.