[adv] among the people; "this topic was popularly discussed"
POPULARLY is a 9 letter word that starts with P.
Webster's 1913 Dictionary
Definition:
\Pop"u*lar*ly\, adv.
In a popular manner; so as to be generally favored or
accepted by the people; commonly; currently; as, the story
was popularity reported.
The victor knight, Bareheaded, popularly low had bowed.
--Dryden.
WordNet Dictionary