In a way that is surprising or astonishing and was not expected.
example
Obwohl er kaum gelernt hatte, bestand er die Prüfung erstaunlicherweise mit Bestnote.
Although he had hardly studied, he surprisingly passed the exam with top marks.
Usage tips
Word formation
This adverb is derived from the adjective 'erstaunlich' (surprising/astonishing) and formed with the ending '-erweise'. This ending turns adjectives into adverbs that describe a particular manner or circumstance.
EXAMPLE
Glücklicherweise wurde bei dem Unfall niemand verletzt.
Fortunately, no one was injured in the accident.
Sentence position
'Erstaunlicherweise' (surprisingly) can stand in two main positions in the sentence. If it is in position 1, the verb follows in position 2. It can also stand inside the sentence after the verb and the subject.
EXAMPLE
Erstaunlicherweise hat das alte Auto die lange Reise geschafft.
Surprisingly, the old car managed the long journey.
Use as a comment
This adverb comments on the entire sentence and expresses the speaker's surprise about the situation. It signals that what happened was not expected.
EXAMPLE
Die Mannschaft hat das Spiel erstaunlicherweise noch gewonnen.
The team surprisingly still won the game.
Compare with
confusable
erstaunlicherweise vs erstaunlich
amazing
'erstaunlich' and 'erstaunlicherweise' both express that something is surprising. The difference is mainly grammatical. 'erstaunlich' is an adjective and describes a thing, a person, or a situation. 'erstaunlicherweise' is an adverb and comments on the whole sentence: it says that something happened in a surprising way. Learners can easily confuse the words because they look very similar. As a memory aid: 'ein erstaunliches Ergebnis' (an amazing result), but 'Erstaunlicherweise war das Ergebnis gut' (Surprisingly, the result was good).
erstaunlicherweise
Erstaunlicherweise hat er am Wochenende doch noch Zeit für das Gespräch gefunden.
Surprisingly, he did find time for the conversation over the weekend after all.
erstaunlich
Das Ergebnis der kleinen Studie ist wirklich erstaunlich.