What is a syninym for powerful?

Here are some synonyms for "powerful," depending on the context:

General:

* Strong

* Mighty

* Forceful

* Influential

* Dominant

* Potent

* Robust

* Effective

* Impressive

More specific:

* Authoritative (for power over people)

* Coercive (for power based on force)

* Dynamic (for power that is active and changing)

* Magnificent (for power that is impressive and awe-inspiring)

* Steadfast (for power that is enduring and unyielding)

Figurative:

* Unstoppable

* Indomitable

* Invigorating

* Rousing

For a person:

* Commanding

* Charismatic

* Prestigious

* Respected

The best synonym will depend on the specific context in which you are using the word.