Take the 2-minute tour ×  According to Merriam-Webster:
penetrate — to pass into or through  compenetrate — to penetrate
throughout  What is the difference between the two? Are they
synonymous?  share|improve this question I just got a
'free-14day trial barrier on M-W (looking up the I-thought-it-
was-nonexistent-word compenetrate). Are they now going to be
behind a paywall? This does not automatically increase my view
of wiktionary. –  Mitch May 8 '12 at 19:39 @Mitch, I first saw
that screen a long time ago (never activated my free trial,
though). I think it puts obscure words behind the paywall; more
normal words are not free to access. –  zpletan May 8 '12 at
19:46 I think 'penetrate' is what a pistol will do, and
'compenetrate' is what a machine gun will do (if it is in fact a
recognized word). –  Mitch May 8 '12 at 19:47 Whoops! normal
words actually are free to access in M-W online. –  zpletan May
8 '12 at 20:10  3 Answers 3  up vote 8 down vote accepted  I
don't think they're synonymous, no; one sugges