かRhetorical question expressing strong negation
か can end an apparent question whose answer is treated as obvious. In this use, the speaker is not requesting information but forcefully asserting the opposite conclusion—often “of course not,” “no one,” or “impossible.”
Recover the implied answer
Read the sentence in two steps. First identify the literal question; then ask what answer the speaker treats as self-evident. An affirmative question such as “Could anyone deny it?” therefore presses the conclusion “No one could deny it.” The question shape gives the rejection more emotional or persuasive force than a plain negative statement.
Two common shapes
The rhetorical reading is clear because each question presents an implausible possibility or an answer that the speaker assumes everyone can recognize.
これほど明白な証拠を前にして、なお彼の関与を否定できようか。
Faced with evidence this clear, could anyone still deny his involvement?
AnalyzeThe intended conclusion is that no one could reasonably deny it.
誰がそんな説明で納得するか。
Who would be convinced by an explanation like that?
AnalyzeThe speaker expects the answer “nobody.”
何の準備もなしに、どうして本番で力を発揮できようか。
How could anyone perform well when it counts without any preparation?
AnalyzeHere “how” does not request a method; it rejects the possibility altogether.
The speaker may state the answer
この程度の失敗で、長年の計画を諦めてよいだろうか。いや、ここで立ち止まるわけにはいかない。
Should we abandon a long-term plan over a setback of this size? No—we cannot stop here.
AnalyzeThe following rejection confirms that the question means “we should not abandon it.”
Force and style
In conversation, a sharp or emotionally charged delivery can make the rejection confrontational. In speeches and essays, the same pattern invites the audience to accept a conclusion as obvious. Literary writing often uses it to present a character’s protest, resolve, or disbelief.
Do not confuse the communicative goal
An ordinary question ending in か seeks an answer, whereas rhetorical か uses question form to press an assertion. By contrast, はずがない states a reasoned expectation of impossibility directly, without making the listener reconstruct an obvious answer.
More examples
約束を何度も破る人を、どうして信用できようか。
How could anyone trust someone who repeatedly breaks promises?
Analyzeこのまま黙っていて、事態が好転するか。
Will the situation improve if we simply remain silent? Of course not.
Analyze一度の挫折で、これまでの努力がすべて無駄になるか。
Does one setback make all our effort so far worthless? Certainly not.
Analyze根拠のないうわさに、いったい何の価値があるか。
What value could a baseless rumor possibly have?
Analyze守るべき人々を残して、私だけ逃げられるか。
Could I run away alone and leave behind the people I must protect?
Analyze誰の助けも借りずに、この大事業を成し遂げられるか。
Could one complete such a major undertaking without anyone’s help?
Analyze