Definition

Having full power or authority to act on behalf of someone else, especially in diplomatic or legal matters.

Example

The ambassador was given plenipotent authority to negotiate the treaty.

Conversation

Did you hear that the new ambassador has plenipotent powers?

Yeah, it sounds like they can make decisions without needing approval.

Exactly! It must be a lot of responsibility for them.

For sure, but it also gives them a lot of influence.

Synonyms & Antonyms

Root Explanation

Plenipotent → It is formed from "pleni-" (from Latin "plenus", meaning full) and "potent" (from Latin "potens", meaning powerful). The word "plenipotent" describes someone who has full power or authority to act on behalf of others.

Memory Tip

Think of someone who has 'full' ('pleni-') 'power' ('potent') to make decisions — that's what plenipotent means.

Visually Confused Words