to use a fact or a situation to one's advantage. Tom was able to trade on the fact that he had once been in the army.John traded on his poor eyesight to get a seat closer to the stage.
to use something for your own advantage The mayoral candidate ran the kind of campaign that trades on most people's fear of crime.George traded upon his family's powerful connections.
To put something to calculated and often unscrupulous advantage; exploit something: The children of celebrities sometimes trade on their family names to receive special treatment. People expect me to trade upon my height and join the basketball team, but I play badly.