countertariffEtymologyFrom counter- + tariff.nounA tariff created in retaliation to another tariff.“But if this were not true, the bitterness and animosity generated throughout the world toward our people by the Tariff Act of 1929 has produced countertariff walls in every direction to accomplish the same thing.”verbTo impose a countertariff.“Canada plans to quickly countertariff high-profile items such as coffee from Louisiana and bourbon from Kentucky, similar to how it responded in 2018 when Trump taxed steel and aluminum imports.”