1.  interpenetrate(v = verb.contact) permeate - penetrate mutually or be interlocked; "The territories of two married people interpenetrate a lot"
is one way to penetrate, perforate
Derived form noun interpenetration₁
Sample sentences: Something ----s

2.  interpenetrate(v = verb.contact) diffuse, imbue, penetrate, permeate, pervade, riddle - spread or diffuse through; "An atmosphere of distrust has permeated this administration"; "music penetrated the entire building"; "His campaign was riddled with accusations and personal attacks"
is one way to penetrate, perforate
Derived form noun interpenetration₂
Sample sentences: Something ----s something

   To penetrate between or within; to penetrate mutually. [1913 Webster]
"It interpenetrates my granite mass." [1913 Webster]

   To penetrate each the other; to penetrate between bodies or their parts. [1913 Webster]

interpenetrate, v.
1 intr. (of two things) penetrate each other.
2 tr. pervade; penetrate thoroughly.

Derivative:
interpenetration n. interpenetrative adj.

VB  lie between, come between, get between, intervene, slide in, interpenetrate, permeate, put between, introduce, import, throw in, wedge in, edge in, jam in, worm in, foist in, run in, plow in, work in, interpose, interject, intercalate, interpolate, interline, interleave, intersperse, interweave, interlard, interdigitate, sandwich in, fit in, squeeze in, let in, dovetail, splice, mortise, insinuate, smuggle, infiltrate, ingrain, interfere, put in an oar, thrust one's nose in, intrude, obtrude, have a finger in the pie, introduce the thin end of the wedge, thrust in.

VB  have the entree, enter, go into, go in, come into, come in, pour into, pour in, flow into, flow in, creep into, creep in, slip into, slip in, pop into, pop in, break into, break in, burst into, burst in, set foot on, ingress, burst in upon, break in upon, invade, intrude, insinuate itself, interpenetrate, penetrate, infiltrate, find one's way into, wriggle into, worm oneself into, give entrance to, insert.