Here's what rhymes with pendulumclock.
clock rock lock loc loch crock talk block shock walk flock hoc knock bloc chalk cock dock mock frock hawk doc unlock balk doch proc sock chock hock pock bock gawk jock mach wok calk caulk choc schlock shlock stock stalk smock macaque squawk manioc interlock restock hammerlock backtalk moonwalk ballcock tomahawk antiknock hollyhock leafstalk shoptalk windsock laughingstock aftershock overstock poppycock sparrowhawk electroshock Words that almost rhyme with pendulumclock
log clog grog unclog dog fog frog bog hog blog cog jog flog jag slog wog analog analogue smog agog snog sprog dialogue catalogue monologue epilogue underdog befog prolog epilog monolog quahaug defog synagogue demagogue travelogue synagog travelog demagog pedagogue pedagog pettifog lark dark mark park bark fork mosque pork torque cork shark quark barque hark marque porque manque honk bronc dork bonk conk nark uncork narc wank wonk remark spark stark stork embark matriarch oligarch debark meadowlark patriarch reembark tidemark fingermark disembark watermark paperbark