demonstrably
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demonstrably
Used as an adverb and means that something can be proven or substantiated; provably, as has been shown.
Der Angeklagte war zur Tatzeit nachweislich in einer anderen Stadt.
The defendant was demonstrably in another city at the time of the crime.
The word is derived from the verb 'nachweisen' (to prove), which means 'beweisen' (to prove). The ending '-lich' turns it into an adjective or adverb meaning 'provable' or 'demonstrably'.
Diese Methode ist nachweislich die effektivste.
This method is demonstrably the most effective.
As an adverb, 'nachweislich' (demonstrably) can stand at the beginning of the sentence (position 1) or inside the sentence. If it stands at the beginning, the verb follows directly after it.
Nachweislich hat er die Wahrheit gesagt.
Demonstrably, he told the truth.
'Nachweislich' (demonstrably) is often used in formal, official, or scientific contexts. It emphasizes that a statement is based on facts or evidence.
Der Klimawandel führt nachweislich zu extremeren Wetterereignissen.
Climate change demonstrably leads to more extreme weather events.
indeed / actual
Tatsächlich confirms that something is really the case, but does not state the basis for this confirmation. Nachweislich additionally says that verifiable evidence exists. Use nachweislich when the proof is important; tatsächlich is enough for simply stating a fact.
Der Fehler trat nachweislich schon am Montag auf, wie das Protokoll zeigt.
The error demonstrably occurred as early as Monday, as the record shows.
Der Fehler trat tatsächlich schon am Montag auf.
The error did in fact occur as early as Monday.
