powerful

adj

1. potent, mighty, strong, Literary. puissant, Archaic. potential; forceful, vehement, intense, great, formidable, overwhelming, overpowering, Sl. packing a punch or wallop; impregnable, unassailable, unvulnerable, unconquerable, indomitable, unyielding, impenetrable, inviolable, inexpugnable; irresistible, almighty, omnipotent, all-powerful, incontestable, unbeatable, more than a match for; armed to the teeth, invincible, unsub-duable.

2. sturdy, stalwart, rugged, tough, sinewy, steely; firm, solid, solid as a rock or oak, made of iron; stout, thick, sound, staunch, stanch, substantial; having the strength of ten, strong as a bull or horse or lion, sturdy as an ox, Inf. husky, big, Inf. hefty, Inf. beefy; able-bodied, well-set, well-knit, well-built, muscular, burly, brawny, musclebound; hale, hardy, robustious, robust, dynamic, dynamical, energetic, energetical, vigorous, virile, manly, athletic, active; hearty, lusty, strapping, doughty, full-blooded, red-blooded.

3. effective, forcible, effectual, efficacious, operative, efficient.

4. cogent, persuasive, suasive, convincing, believable; logical, rational, factual, valid, sound; moving, rhetorical, eloquent, impressive, winning; conclusive, decisive, definitive.

5. influential, weighty, carrying a lot of weight, Inf. carrying clout; eminent, prestigious, recognized, reputable, significant, important; ascendant, dominant, predominant, hegemonic, leading, prepotent, preeminent, supreme; dominating, authoritative, authoritarian, commanding, Sl. take-charge.