No Method Exists
ようがない says the action is impossible because there is no means of doing it — not because you lack the skill.
- 連絡先を知らないので連絡しようがない。(I have no contact details, so there's no way to reach them.)
Against the Potential Form
| Pattern | Why not |
|---|---|
| 泳げない | I can't swim — I lack the ability |
| 泳ぎようがない | there's nowhere to swim — no means exists |
Use the potential form for ability. ようがない is about circumstances leaving no route.
The Resignation Sense
It often carries a shrug — nothing can be done about it:
- 仕方がない at the same register, and 直しようがない for something beyond repair.
Form
ますstem + ようがない. ようもない is an equally common variant with slightly more emphasis. する becomes し: 説明しようがない.
Against がたい
がたい means barely possible, usually for psychological reasons. ようがない means no method exists at all. がたい is reluctance; ようがない is impossibility.