from somewhere
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from somewhere
Indicates an unspecified or unknown place or an unspecified source from which something or someone comes. It is the answer to the question 'Woher?' (from where?), when the exact origin is not known or not important.
Ich habe ein Geräusch gehört, es muss irgendwoher aus dem Keller gekommen sein.
I heard a noise; it must have come from somewhere in the basement.
The word consists of three parts: 'irgend-' (some-/any-), 'wo' (where), and 'her' (from/toward here). The prefix 'irgend-' expresses indefiniteness, while 'woher' asks about origin. Together, it means 'from an unspecified place.'
Die Musik kommt irgendwoher von draußen.
The music is coming from somewhere outside.
'Irgendwoher' (from somewhere) is an adverb and usually comes directly after the conjugated verb. It always answers the question 'Woher?' (from where?) when the place is unknown.
Er muss das Geld irgendwoher bekommen haben.
He must have gotten the money from somewhere.
This adverb is often used with verbs that describe an origin or a source. Typical combinations are 'irgendwoher kommen' (to come from somewhere), 'irgendwoher wissen' (to know from somewhere), 'irgendwoher kennen' (to know from somewhere), or 'irgendwoher hören' (to hear from somewhere).
Ich kenne diese Melodie irgendwoher, aber ich weiß nicht, woher.
I know this melody from somewhere, but I don't know where from.
somewhere
'irgendwo' and 'irgendwoher' both talk about a place that is not exactly known or not important. The difference lies in the direction of the question: 'irgendwo' answers 'Wo?' (where?) and means a place where something is or happens. 'irgendwoher' answers 'Woher?' (from where?) and means the origin or source that something comes from. You can confuse the words because both are vague. So pay attention to the question: place is 'irgendwo'; origin is 'irgendwoher'.
Das laute Geräusch kam irgendwoher aus dem Flur.
The loud noise came from somewhere in the hallway.
Meine Schlüssel liegen irgendwo auf dem Schreibtisch.
My keys are somewhere on the desk.