| difficulty(noun, complexity) |
| insight(noun, understanding, wisdom, wise, perceptiveness) |
| intelligence(noun, understanding, intelligence, wisdom, insight) |
| intricacy(noun, complexity) |
| knowledge(noun, understanding, intelligence, wisdom, perceptiveness) |
| sagaciousness(noun, understanding, intelligence, wisdom, wise) |
| sophistication(noun, understanding, intelligence, wisdom, perceptiveness) |
| abstrusity |
| enlightenment(noun, understanding, wisdom, perceptiveness) |
| keenness(noun, wisdom, intensity, insight) |
| reason(noun, understanding, wisdom, perceptiveness, intelligence wisdom) |
| sharpness(wisdom, insight) |
| shrewdness(noun, understanding, wisdom, perceptiveness) |
| solidity(noun, understanding, wisdom, perceptiveness, intelligence wisdom) |
| understanding(noun, wisdom, perceptiveness) |
| acuity(noun, understanding, sense, wisdom, insight) |
| authority |
| balance(noun, understanding, wisdom, perceptiveness) |
| bottomlessness |
| caliber(noun, intelligence wisdom) |