pep

UK: /ˈpɛp/ US: /pɛp/ ,(pep)

Inflections of 'pep' (v): (⇒ conjugate)

peps

v 3rd person singular

pepping

v pres p

pepped

v past

pepped

v past p

WordReference Random House Learner's Dictionary of American English © 2026

pep /pɛp/   n., v., pepped, pep•ping. 
n. [uncountable]

1. Informal Terms lively spirits or energy:
   After her coffee she felt full of pep again.

v. 

2. pep up, to make or become spirited: [~ + up + object]
   something to pep up his students.
   [~ + object + up]
   Perhaps this movie will pep them up.

pep•pi•ness, n. [uncountable]
pep•py, adj., -pi•er, -pi•est. 

WordReference Random House Unabridged Dictionary of American English © 2026

pep  (pep), n., v., pepped, pep•ping. [Informal.]
n. 

1. Informal Terms lively spirits or energy;
   vigor;
   animation.

v.t., v.i. 

2. pep up, to make or become spirited, vigorous, or lively;
   animate:
   We need something to pep up this party.

• short for pepper 1840–50

pep′ful, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::

pep / pɛp/ noun

1. high spirits, energy, or vitality

verb (peps, pepping, pepped)

1. (transitive) usually followed by up: to liven by imbuing with new vigour

Etymology: 20th Century: short for pepper

Collins Concise English Dictionary © HarperCollins Publishers::

PEP / pɛp/ acronym:noun

1. personal equity plan: a method of saving in the UK with certain tax advantages, in which investments up to a fixed annual value can be purchased: replaced by the ISA in 1999 but arrangements for existing PEPs remain unchanged
2. post-exposure prophylaxis: measures taken to prevent infection after a person has been exposed to a pathogen such as the HIV virus
   Compare PrEP

PEP abbreviation

1. political and economic planning