Definition of "heftiest" [heftiest]

• Superlative form of hefty: most hefty. (adjective)

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• "We are increasingly conscious of our environment, and no longer have to drive the heftiest SUV on the road."
• "At 9.6 ounces, this was the heftiest of the group."
• "Next week: My favorite HEFTY breakfast...because sometimes only the heftiest will do."