Anterior
Protagonist
Protoplasm
Antedate
Malign
Protocol
Prototype
Catalyst
Catacomb
Catatonic
the basic substance of all life (cell)
an underground cemetery of connecting passageways with recesses for tombs
front of the body
Main character in a story
precede in time
characterized by a marked lack of movement, activity, or expression
to speak evil of
something that brings about a change in something else
code of correct conduct
a mental image or best example of a category