Sofort.

The German word 'sofort' originates from Middle High German 'sōvort' or 'sō vürte', which literally translates to 'so forth' or 'so in front'. It's a compound of 'sō' (so, thus) and 'vort' or 'vürte' (forth, forward, onward). Over time, the meaning evolved to express immediacy and the absence of delay. The 'vort' component is related to Old High German 'fort' and has cognates in other Germanic languages, such as Old English 'forþ' (forth) and Old Norse 'forð'. The prefix 'sō' emphasizes the immediacy, similar to how 'so' can be used in English to intensify an adjective or adverb (e.g., 'so quickly'). The evolution of 'sofort' reflects a linguistic pattern where terms indicating spatial proximity or progression transform to convey temporal immediacy. This is a common phenomenon across languages, where concepts of 'going forward' or 'being in front' are leveraged to express the idea of something happening without delay. The word has maintained its core meaning of 'immediately' or 'at once' throughout its history and is a very common adverb in modern German, used to indicate prompt action or an instantaneous occurrence.