was

pronoun

1. what

   “Was machst du heute?”

2. which; referring to the entire preceding clause

   “Sie tanzte gut, was er bewunderte.”

3. that, which; referring to das, alles, etwas, nichts, and neuter substantival adjectives

   “Das ist alles, was ich weiß.”

4. that, which; referring to neuter singular nouns, instead of standard das

   “Siehst du das weiße Haus, was renoviert wird?”

determiner

1. what; what kind of

adverb

1. clipping of etwas: a bit, somewhat

   “Ich komm was später.”

2. why, what for; often expressing a personal concern about the matter

   “Was bist du heute so stumm?”

interjection

1. eh?, huh? (tag question)

   “Ganz schön kalt, was?”