1. impossible to describe exactly or give an exact definition of

Examples

• There was something indefinable about her charm that attracted everyone.
• The painting had an indefinable quality that made it mesmerizing.
• He felt an indefinable sense of unease as he entered the old house.
• The perfume had an indefinable scent that reminded her of childhood.
• There’s an indefinable magic in the way she tells stories.
• The music created an indefinable mood of nostalgia.