~ようがない
There is no possible way to do it
You’ll be able to say that an action is impossible because no workable method exists.

山の奥で電波が届かないので、調べようがありません。
yama no oku de denpa ga todokanai node, shirabeyou ga arimasen.
What do you think this sentence means?
We're deep in the mountains with no signal, so there's no way to look it up.
Say there is no possible method or means
~ようがない attaches to the verb stem to express that even if one wants to do something, absolutely no method or means exists ("no way to...", "impossible to...").
住所が分からないから、手紙を送りようがない。
juusho ga wakaranai kara, tegami o okuriyou ga nai.
I don't know the address, so there's no way to send the letter.
店がもう閉まっているから、買いようがない。
mise ga mou shimatte iru kara, kaiyou ga nai.
The shop is already closed, so there's no way to buy it.
Attach ようがない to the verb stem
Attach ようがない directly to the verb stem (masu-stem). For する nouns, use <slot>noun</slot> + のしようがない or <slot>noun stem</slot> + しようがない.
これほど破損がひどいと、直しようがない。
kore hodo hason ga hidoi to, naoshiyou ga nai.
When the damage is this severe, there's simply no way to fix it.
potential negative vs ~ようがない
A potential negative (直せない) just says you can’t do it, perhaps because you lack the skill. ~ようがない says there is no method at all, so nobody could do it.
potential negative, can't
この時計は、私には直せない。
kono tokei wa, watashi ni wa naosenai.
I can't fix this watch.
I can’t; someone else might.
~ようがない, there is no way to
この時計は、もう直しようがない。
kono tokei wa, mou naoshiyou ga nai.
There's no way anyone can fix this watch anymore.
No method exists at all.
ぶつかった車はすぐに行ってしまって、番号も見ていないので、探しようがない。
butsukatta kuruma wa sugu ni itte shimatte, bangou mo mite inai node, sagashi you ga nai.
The car that hit us drove off right away, and I didn’t even see its number, so there is no way to find it.
店の名前も場所も覚えていないので、もう一度行きたくても行きようがない。
mise no namae mo basho mo oboete inai node, mou ichido ikitakute mo iki you ga nai.
I don’t remember the shop’s name or where it is, so even though I want to go again, there’s no way I can.
メモの字が雨でにじんでしまって、何が書いてあったのか読みようがない。
memo no ji ga ame de nijinde shimatte, nani ga kaite atta no ka yomi you ga nai.
The writing on the note got smudged by the rain, so there is no way to read what was written.
7 more examples in the grammar path — free for a limited time.