POWERFUL

adj. 1 potent, strong, mighty, vigorous, robust, energetic, sturdy, stalwart, tough, resilient, dynamic Leslie has a powerful physique The cities of the Hanseatic League had powerful economies. 2 influential, strong, compelling, forceful, potent, substantial, weighty, authoritative, effective; important, impressive, telling, effectual, formidable, persuasive Powerful arguments have been brought to bear against taking such action She has many powerful friends. 3 strong, potent; intense, substantial, great, high The drug is too powerful to be taken regularly A powerful electrical charge was sent through the wire to test the connection.