vorbeilässt

"vorbeilässt" is a word-like sequence that appears to combine the particle vorbei ("past" or "by") with the conjugated form lässt (second-person singular present of lassen). In standard German it is not a recognized standalone lemma; it is best analysed as an incorrect or nonstandard attachment of a separable prefix to a conjugated auxiliary.

Linguistically, German separable verbs such as vorbeilassen (vorbei + lassen, "to let pass" or "to allow to pass") split in main clauses: the finite verb appears in second position and the prefix moves to the end (du lässt ihn vorbeigehen). Consequently the form *du vorbeilässt is ungrammatical in standard modern German. Correct alternatives include du lässt ihn vorbeigehen, du lässt jemanden vorbeilassen, or er hat ihn vorbeigelassen (perfect).

Etymology and usage: vorbei is a prepositional/adverbial element from vor (“before, in front of”) + bei (“by”), while lassen is a common verb meaning “to let, leave, allow.” Combinations produce verbs used in traffic and social contexts (e.g., jemanden vorbeilassen — to allow someone to pass). Orthographically lässt retains ß in standard spelling.

Occurrences of vorbeilässt may be found in informal writing, dialectal speech, transcription errors, or poetic wordplay, but prescriptive grammars and major dictionaries treat the split form as the normative structure.