〜得る / 〜得ない
Can / cannot 〜得る
Meaning
"Can possibly ~", "it is conceivable that ~". The negative 得ない means "could not possibly".
Formation
[verb ます-stem] + 得る(うる / える) · [verb ます-stem] + 得ない(えない)
Notes
The affirmative is read either うる or える; the negative is always えない. It is about logical possibility, not personal ability — 泳ぎ得る is wrong for "I can swim", where 泳げる is the potential form. ありえない ("impossible") is the everyday survivor of this pattern.
Examples
そんなことはあり得(え)ません。
That simply cannot happen.
Breakdown
誰(だれ)にでも起(お)こり得(う)る問題(もんだい)です。
It is a problem that can happen to anyone.
Breakdown
その計画(けいかく)は成功(せいこう)し得(う)ると思(おも)います。
I think that plan could succeed.
Breakdown
彼(かれ)が嘘(うそ)をつくなんて考え得(かんがえう)ないことです。
It is inconceivable that he would lie.
Breakdown
地震(じしん)はいつでも起(お)こり得(え)ます。
An earthquake can occur at any time.
Breakdown
⚠️ Often confused with
〜られる / 〜える
Potential form 可能形 (can do)
The potential form of a verb — "can do / be able to do". The spontaneous/conversational al...
〜ようがない
No way to 〜ようがない
"There is no way to ~", "cannot possibly ~" — no method exists.