— pepful , adj.
/pep/ , n. , v. , pepped, pepping . Informal.
n.
1. 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.
[ 1840-50; short for PEPPER ]