pep
UK[pɛp]US[pɛp]
n
liveliness and energy; spirited enthusiasm.
v
to make someone or something more lively or energetic.
Etymology
The word "pep" emerged in the early 20th century as a shortened form of "pepper", used in the figurative sense of "spirit" or "energy". This metaphorical link draws on the pungent, stimulating quality of pepper as a spice, which can add zest to food. The transition from a physical condiment to an abstract quality of liveliness is a classic example of semantic extension, where a tangible property is applied to characterize human vigor. Its concise, punchy form perfectly suits its modern meaning of brisk energy or enthusiasm.
Analysis
The word "pep" is a simplex word. It is a clipping or shortening of the noun "pepper".
Examples
The coach gave a speech to put some pep back into the team.
She always starts her day with a walk to pep herself up.
The new design has added some much-needed pep to the product line.