Definitions

1. noun

The state or quality of being insubstantial or lacking in solidity or firmness.

“The artist’s use of light and shadow created a sense of insolidity in the painting, making it difficult to discern the subject’s form.”

2. noun

A lack of solidity or firmness in one’s character or actions, often resulting in indecisiveness or a lack of resolve.

“Her insolidity in the face of adversity led to her failure to make a decision, ultimately costing her the opportunity.”