素性の知れない人物を信用してはいけない。
You shouldn't trust a person of unknown background.
Listen to pronunciation
Handwriting
Example sentences
The result is already quite obvious.
どこの馬の骨とも知れぬ若造に、我々の計画を邪魔されてたまるか。
We won't let some unknown callow youth interfere with our plans.
森の奥で得体の知れない物音がした
An unidentifiable sound came from deep within the forest.
娘がどこの馬の骨とも知れない男と結婚すると言い出した。
My daughter announced that she's going to marry a man of unknown origin.
老婆親切かもしれないが、一言忠告させてほしい。
This might be uncalled-for kindness, but let me give you a piece of advice.
病床の父が急に元気に話し始めたのは、回光反照だったのかもしれない。
The fact that my father on his deathbed suddenly started talking energetically might have been a final burst of life.
Usage Notes
Often used in the form 'たかが知れている' to mean something is not a big deal or its limits are clear.
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