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adj. heft·i·er, heft·i·est
1. Of considerable weight; heavy.
2. Big and strong; stout or muscular. See Synonyms at heavy.
3. Strong and sturdy: a hefty door.
4. Of considerable size or amount; substantial: a hefty serving of mashed potatoes; received a hefty bonus.
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|Noun||1.||heftiness - possessing muscular strength|
strength - the property of being physically or mentally strong; "fatigue sapped his strength"
|2.||heftiness - the property of being large in mass|