fathom
Definition
To understand the meaning of something, especially something difficult; also, a unit of length equal to six feet, used in measuring depth of water.
हिन्दी किसी कठिन चीज़ के अर्थ को समझना; छह फीट की लंबाई की इकाई, जल की गहराई मापने में प्रयुक्त।
Example
"I can't fathom why she would say such a thing."