ずともEven without doing
ずとも says that a result remains true even if the preceding action is not performed. It is a literary or elevated expression used mainly in formal writing and deliberate rhetoric.
How it works
The first clause names an action that might seem necessary. ずとも then rejects that necessity: the result in the main clause still holds without the action.
The result does not depend on the action
詳しい説明を読まずとも、この図を見れば仕組みは理解できる。
Even without reading the detailed explanation, you can understand how it works by looking at this diagram.
Analyze実験をせずとも、既存のデータから結果を推定できる。
The result can be estimated from existing data even without conducting an experiment.
AnalyzeUse せずとも with する verbs.
多くを語らずとも、その決意は表情から伝わった。
Even without saying much, that determination came through in the expression.
AnalyzeChoosing the right negative linker
なくても gives the same basic “even without” meaning in ordinary modern Japanese; changing it to ずとも makes the statement literary or rhetorical. By contrast, ずに simply connects doing one thing without doing another; it does not itself say that the result remains true regardless of the omitted action.
Special and limited forms
The verb 来る can form 来ずとも, but this is particularly literary and is not a good model for ordinary production. With nouns, the occasional pattern ならずとも means that membership in the named category is unnecessary.
Noun extension
専門家ならずとも、この判断が危険だと分かる。
Even a nonexpert can see that this judgment is dangerous.
AnalyzeThis is an elevated extension meaning that one does not have to be an expert.
More examples
現地を訪れずとも、公開資料だけで概要はつかめる。
Even without visiting the site, one can grasp the outline from publicly available materials alone.
Analyze証拠を一つ一つ挙げずとも、結論は明らかである。
The conclusion is clear even without listing every piece of evidence.
Analyze言葉にせずとも、互いの意図は通じていた。
Even without putting it into words, they understood each other's intentions.
Analyze名を告げずとも、彼が誰かは皆知っていた。
Even without giving his name, everyone knew who he was.
Analyze特別な装置を使用せずとも、この測定は可能である。
This measurement is possible even without using special equipment.
Analyze声を荒らげずとも、強い意志は示せる。
One can show strong resolve even without raising one's voice.
Analyze