forming words, with the meanings:
through or throughout
perambulate
pervade
thoroughly or very
perfervid
perfect
peroxide
containing an atom in a high oxidation state in its molecular structure
perchloric acid
containing a large proportion of a specified chemical element or group
to the bad; to destruction
perjure
perdition
containing a large proportion of a specified chemical element or group
[French or Latin, through, throughout, thoroughly, to destruction, from per]