難航する · noun or participle which takes 'suru'
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 難航する | 難航しない |
| Polite | 難航します | 難航しません |
| Past polite | 難航しました | 難航しませんでした |
| Past | 難航した | 難航しなかった |
| Te-form | 難航して | 難航しないで |
| Desire | 難航したい | 難航したくない |
| Potential | 難航できる | 難航できない |
| Passive | 難航される | 難航されない |
| Causative | 難航させる | 難航させない |
| Causative passive | 難航させられる | 難航させられない |
| Volitional | 難航しよう | |
| Polite volitional | 難航しましょう | |
| Imperative | 難航しろ | 難航するな |
| Conditional | 難航すれば | 難航しなければ |
| Tara conditional | 難航したら | 難航しなかったら |
noun, noun or participle which takes 'suru', intransitive verb
difficult voyage; stormy passage; hard flight
Literal use for travel by sea or air that encounters bad weather or obstacles.
The ship had a difficult voyage due to the typhoon.
The plane is having a hard flight because of thick fog.
noun, noun or participle which takes 'suru', intransitive verb
rough going; running into trouble; proceeding with difficulty
Figurative use for projects, negotiations, or processes that face setbacks and do not go smoothly.
The negotiations are running into trouble.
Development of the new product is proceeding with difficulty.
The negotiations between labor and management are running into trouble.
The restoration work ran into extreme difficulties.
The voyage to Antarctica became a stormy, difficult passage due to the storm.