〜ないことには
Unless 〜ないことには
Meaning
"Unless ~", "without first ~ing" — nothing can proceed until this happens.
Formation
[verb ない-form] + ことには · [noun] で + ないことには
Notes
The second clause is almost always negative or an impossibility: 見ないことには分かりません. It marks a precondition without which the rest cannot even begin, which is stronger than a plain 〜なければ.
Examples
実際(じっさい)に見(み)ないことには分(わ)かりません。
I cannot tell unless I actually see it.
Breakdown
食(た)べてみないことにはおいしいかどうか分(わ)からない。
You cannot know if it is good unless you try it.
Breakdown
許可(きょか)をもらわないことには始(はじ)められません。
We cannot start unless we get permission.
Breakdown
健康(けんこう)でないことには何(なに)もできません。
Without your health you can do nothing.
Breakdown
会(あ)ってみないことには人柄(ひとがら)は分(わ)かりません。
You cannot judge a person's character without meeting them.
Breakdown
⚠️ Often confused with
〜と、〜
Conditional と (whenever / when)
Two uses: (1) natural/habitual consequence — "whenever A happens, B happens"; (2) discover...
〜ば
Conditional 〜ば (if / whenever)
A general conditional — "if A, then B". Formed from the hypothetical form (仮定形) of the...
〜たら
Conditional 〜たら (if / when / after)
The most versatile conditional. "If/when A happens, B". Formed from the ta-form stem + ら....
〜なら
Conditional 〜なら (if / given that)
A conditional based on the listener's stated or known information — "if it's the case that...
〜ても / 〜でも
Even if 〜ても
"Even if A, B" / "no matter if A". Indicates that B happens regardless of A. The result is...
〜場合は
In case 〜場合は
"In the event that ~ / in the case that ~". Used to discuss what to do in a particular (of...
〜としたら / 〜とすれば
Supposing 〜としたら
"Supposing ~", "if we assume ~" — reasoning from a hypothetical.
〜てからでないと
Not until 〜てからでないと
"Not until ~", "unless ~ is done first" — a precondition that must come first.
〜さえ〜ば
If only 〜さえ〜ば
"If only ~", "as long as just ~" — one sufficient condition.