Definition: not able to be understood or grasped
Part of Speech: Adjective
Synonym(s): infinite, boundless
Antonym(s): limited, measurable
1. Not a single student has been able to solve the unfathomable puzzle.
2. I couldn’t understand the teacher’s unfathomable lecture.
3. I only have three pairs of shoes so I find it unfathomable that one athlete has over two hundred pairs of sneakers.