a. शक्तिशाली, ज़ोरदार, ज़ोर का, बलवान, सबल, शक्तिमान, तगड़ा, दृढ़, मज़बूत, पक्का, प्रगाढ़, गाढ़ा, गाढ़, हष्ट-पुष्ट, गहन, बृहत्‌, सामथर्यवान
adv. ज़ोर से, दृढ़ता से, कठोरता से

having strength or power greater than average or expected: sinewy, tough, strengthened, knockout, hard, powerful, muscular, brawny, ironlike, strength, bullnecked, weapons-grade, vehement, industrial-strength, beardown, toughened, hefty, virile, knock-down, beefed-up, robust, well-knit, rugged, noticeable, stiff, bullocky, severe, fortified, well-set, reinforced
not faint or feeble: intense
having or wielding force or authority: powerful, potent
of good quality and condition; solidly built: solid, sound, substantial
being distilled rather than fermented; having a high alcoholic content: hard, alcoholic
strong and sure: firm, forceful
of verbs not having standard (or regular) inflection: irregular
having a strong physiological or chemical effect: strength, fertile, efficacious, effective, stiff, powerful, effectiveness, potent, multipotent, effectual, potency, equipotent
freshly made or left: fresh, warm
immune to attack; incapable of being tampered with: unattackable, secure, unassailable, invulnerable, impregnable, inviolable