Rubberize rhymes with:
accessorize, authorize, burglarize, categorize, characterize, circularize, colorize, computerize, containerize, demilitarize, depressurize, familiarize, glamorize, memorize, mesmerize, militarize, miniaturize, mischaracterize, motorize, pasteurize, plagiarize, polarize, polymerize, popularize, pressurize, pulverize, reauthorize, samurai's, samurais, satirize, summarize, temporize, terrorize, theorize, vaporize, winterize
Rubberize sounds like:
rapers, rappers, reappears, reappraise, reaver's, reefers, referee's, referees, refers, refresh, refreshes, rehberg, repairs, rephrase, repress, reprice, reprise, reproach, reprocess, repurchase, repurchases, reveres, reveries, reverse, reverses, reviewer's, reviewers, river's, rivers, riverso, rivieres, robarge, robberies, robbers, roberg, roberge, robers, roofers, roper's, ropers, rover's, rovers, rubbers, ruberg, rubric, rybarczyk, ryberg