
der Pep
pep
Colloquial for momentum, drive, or energy that makes something livelier or more interesting.
Dem ganzen Projekt fehlt noch der nötige Pep.
The whole project still lacks the necessary pep.
pep / speed
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pep
Colloquial for momentum, drive, or energy that makes something livelier or more interesting.
Dem ganzen Projekt fehlt noch der nötige Pep.
The whole project still lacks the necessary pep.

speed
A colloquial term in the drug scene for the stimulant drug amphetamine, also known as speed.
Auf der Party wurde ihm Pep angeboten, aber er lehnte ab.
At the party, he was offered speed, but he turned it down.
'Pep' is a loanword from English, where 'pep' also means drive and energy. The pronunciation is based on English.
Mit etwas Musik bringen wir mehr Pep in die Veranstaltung.
With a bit of music, we'll bring more pep to the event.
The word 'Pep' is used exclusively in colloquial language in both meanings. It is uncommon in formal or written contexts.
Die Präsentation war gut, aber ihr fehlte der Pep.
The presentation was good, but it lacked pep.
You can clearly tell which meaning is intended from the context. If it is about projects, food, or fashion, it means energy. If people are talking about drugs or crime, it means the drug.
Der Soße fehlt noch etwas Pep, vielleicht ein paar Kräuter?
The sauce still needs a little pep, maybe a few herbs?
In the meaning of 'Schwung' (drive), 'Pep' is often used in fixed phrases: something has 'Pep' (pep), something 'gibt Pep' (adds pep), or something is 'ohne Pep' (without pep).
Ein bunter Schal gibt deinem Outfit den richtigen Pep.
A colorful scarf gives your outfit the right pep.
speed
Speed and Pep are both colloquial terms for amphetamine. Pep is particularly associated with the language of the drug scene, while Speed is generally described as a colloquial term. In this usage, both refer to the same stimulant drug.

In der Drogenszene wird dasselbe Amphetamin auch Pep genannt.
In the drug scene, the same amphetamine is also called speed.
Im Gespräch nannte sie das Amphetamin Speed.
In the conversation, she called the amphetamine speed.