What does the word 性故か mean?

Question

I found the word 性故か while reading. I tried to look at the dictionary but found nothing.

Here is the entire sentence:

それとも逆らえぬ性故か

I don't really understand, please help!

Answer 1

I found the word 性故か while reading.

That is not a word; It is three words 「[性]{さが} + [故]{ゆえ} + か」

「性」 means "one's nature", "one's disposition", etc. 「[逆]{さか}らえぬ性」 thus means "one's nature of not being able to defy others", "one's nature of not being able to swim against the current", etc. Without more context provided, it is impossible to know what is being talked about here.

「故」 means "reason".

「か」, of course, is a question marker.

Again, without further context, we could only say that 「それとも逆らえぬ性故か」 would mean along the lines of:

"Or would it be because of (one's) nature of not being able to defy others?"

Answer 2

性{さが} means attribute, character. 故{ゆえ} means cause, reason.

I think か in this phrase is used as telling oneself like 寝るとするか.

So 逆らえぬ性故{さがゆえ}か means the cause seems to be my attitude which I can't rebel.