| Subject | English | Japanese |
| gen. | adj-i difficult to explain | 説きにくい |
| gen. | adj-i difficult to explain | 説きがたい |
| gen. | adj-i difficult to explain | 説き難い |
| gen. | n adj-no with circumstances that are difficult to explain | いわく付き |
| gen. | n adj-no with circumstances that are difficult to explain | 曰く付き |