What is the antonym for abbreviation?

There isn't a single perfect antonym for "abbreviation," as it depends on the specific context. Here are some possibilities:

If you're talking about shortening a word:

* Expansion: This directly refers to making something longer.

* Full form: This emphasizes the complete version of the word.

* Complete word: This is a simple way to say the full version.

If you're talking about a concise representation:

* Elaboration: This suggests a more detailed explanation.

* Description: This implies a full and detailed account.

* Explanation: This focuses on providing understanding.

The best antonym depends on the specific meaning you're trying to convey.