Grammar
N3 verb-grammar

Can / cannot 〜得る

Meaning

"Can possibly ~", "it is conceivable that ~". The negative 得ない means "could not possibly".

Formation

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

That simply cannot happen.

Breakdown
such a thing cannot possibly be

It is a problem that can happen to anyone.

Breakdown
to anyone can happen

I think that plan could succeed.

Breakdown
that plan could succeed

It is inconceivable that he would lie.

Breakdown
tell a lie inconceivable

An earthquake can occur at any time.

Breakdown
earthquake can occur

⚠️ Often confused with

Potential form 可能形 (can do)

The potential form of a verb — "can do / be able to do". The spontaneous/conversational al...

No way to 〜ようがない

"There is no way to ~", "cannot possibly ~" — no method exists.