Noun: heftiness hef-tee-nus
- Quality of having muscular strength
"His heftiness was evident in his ability to lift heavy objects with ease";
- brawn, brawniness, muscle, muscularity, sinew
- The property of being large in mass
"The heftiness of the elephant was evident as it lumbered along";
- heft, massiveness, ponderousness, ponderosity
Type of: heaviness, strength, weightiness