1. Possessing muscular strength
   - brawn, brawniness, muscle, muscularity, sinew 
2. The property of being large in mass
   - heft, massiveness, ponderousness, ponderosity

Derived forms: heftinesses

See also: hefty

Type of: heaviness, strength, weightiness

• well-adjusted
• well-advised
• well-appointed
• well-balanced
• well-behaved
• well-bound
• well-branched
• well-bred
• well-chosen
• well-conducted
• well-connected
• well-defined
• well-disposed
• well-dressed
• well-earned
• well-educated
• well-endowed
• well-favored
• well-favoured
• well-fed
• well-fixed
• well-formed
• well-found
• well-founded
• well-groomed