powerful

Having great strength, control, or influence.

• The car has a powerful engine.
• She became a powerful political leader.
• These powerful machines can lift very heavy loads.

Similar words: strong, influential, mighty

Opposites: weak, powerless

Common phrases: powerful leader, powerful engine, powerful country, powerful influence

Allowing many useful or important conclusions to be drawn.

• These are powerful axioms.
• The theory is powerful because it explains many separate results.
• A small but powerful set of principles supports the whole argument.

Similar words: fruitful, productive

Common phrases: powerful theory, powerful axioms, powerful logical system