Possessing might or power; powerful, potent, strong. Frequently rhetorical, connoting a pre-eminent… Of God: possessing transcendent power. Of a…

Powerful in operative effect. Of a medicine, food or drink, poison, chemical reagent, etc.

Possessing inherent strength or excellence; powerful; highly effective. Obsolete.

Scottish in later use. Of a thing: powerful, strong; spec. (of a medicine) efficacious. Obsolete.

Having great power or force; effective, powerful; influential, potent; that prevails with or against (a person or thing). Obsolete.

Relating to, characterized by, or full of energy (in various senses); esp. operative; efficacious. Cf. energic, adj.

Capable of exerting great force (physical or immaterial); having great faculty or ability to do; strong, dynamic.

Powerful. Obsolete.

Possessing great power.

Potent, powerful, effective. Obsolete. rare.

Valid, in various senses.

= Herculean, adj.; in quot. 1604, humorously, ‘very strong’.

Having much power; very powerful. Now rare.

Effective or powerful in operation; efficacious; forceful; potent; = energetic, adj. 2. Obsolete.

Formerly: †powerful, influential; = prevalent, adj. 1a (obsolete). In later use: widespread, pervasive; = prevalent, adj. 3. Cf. prevailant, adj.

Effective or powerful in operation; efficacious; forceful; potent. Obsolete.

Of things: Strong, powerful. Now archaic.

Effective or powerful in operation; potent; = energetic, adj. 2. Obsolete.

transferred. Vigorously effective; violent.