Schwerste

hardest thing, most difficult part

Schwer difficult + st Superlative + e feminine singular nominative/accusative
noun Rare #48,792
hardest thing, most difficult part Used as a noun, often with “das.”
GE: Das Schwerste ist schon vorbei.
EN: The hardest part is already over.

Was ist das Schwerste beim Lernen einer Sprache?

What is the hardest part of learning a language?

Das Warten war das Schwerste.

Waiting was the hardest part.

— Schmetterling und Taucherglocke (2007)

Das Schwerste haben wir hinter uns.

We've overcome the hardest part.

— Jean Florette (1986)

Das ist das Schwerste an meiner Arbeit.

That’s the hardest part of my job.