How do you say “vomit” in German?

The German verb for “to vomit” or “to throw up” is either “erbrechen” or the reflexive “sich übergeben”, which literally means “to give oneself over”.

Watch out though, the noun for vomit is NOT “Übergabe” (f.), which means “handover”. You‘d rather use “das Erbrochene” in polite speech.

Other common terms are “brechen” and “spucken” (often said about babies and children), although these words are ambiguous as they also mean “to break” and “to spit”, respectively.

Vulgar, but very common expressions (similar to “to barf” or “to puke”) are “kotzen” (with the noun “Kotze” referring to the resulting product), “reihern” (from the bird “Reiher”, which is a “heron” in English, and regurgitates food for its young) and, more rarely “kübeln” (from “Kübel” for “bucket” or “tub”) or the sophisticated “(aus)speien” (“to spew” or “to spout”).