An adverb that introduces a consequence that will happen if a previously mentioned condition is not met. Synonymous with 'sonst' (otherwise).
example
Du musst dich beeilen, andernfalls verpasst du den Zug.
You have to hurry; otherwise you'll miss the train.
Usage tips
Word composition
The word is made up of 'andern' (a form of 'ander') and 'falls' (in the event of). So it literally means 'in the other case' and introduces the consequence if a condition is not met.
EXAMPLE
Wir müssen jetzt los, andernfalls kommen wir zu spät.
We have to leave now; otherwise we'll be late.
Word order
When 'andernfalls' is at the beginning of the sentence (position 1), the verb follows directly after it (position 2). But it can also appear in the middle of the sentence after the verb and the subject.
EXAMPLE
Bitte bestätigen Sie den Termin. Andernfalls müssen wir ihn absagen.
Please confirm the appointment. Otherwise we will have to cancel it.
Register and style
'Andernfalls' belongs more to written language or to a more formal style. It is often found in instructions, official letters, or factual arguments.
EXAMPLE
Die Rechnung ist innerhalb von 14 Tagen zu bezahlen, andernfalls wird eine Mahngebühr fällig.
The invoice must be paid within 14 days; otherwise a reminder fee will be charged.
Compare with
synonym
andernfalls vs sonst
otherwise / else
'sonst' and 'andernfalls' mean almost the same thing in this context: they name a consequence that happens if a condition is not met. 'sonst' is very natural and short in everyday language. 'andernfalls' sounds a bit more formal and fits well in clear instructions, rules, or written texts. In many sentences, you can use both, especially after a request or condition.
andernfalls
Der Lehrer bittet um pünktliche Abgabe, andernfalls zählt die Aufgabe nicht.
The teacher asks for the assignment to be handed in on time; otherwise, it will not count.
sonst
Kauf die Fahrkarte vorher, sonst musst du im Zug mehr bezahlen.
Buy the ticket beforehand, otherwise you'll have to pay more on the train.