<p><strong>Adjective</strong></p><ul><li>heftier</li><li>heftiest</li><li>heavy; weighty: a hefty book.</li><li>big and strong; powerful; muscular: a hefty athlete.</li><li>impressively large or substantial: a hefty increase in salary.</li></ul><p><strong>Synonyms</strong></p><ul><li>stalwart</li><li>burly</li><li>husky</li><li>robust</li></ul>