What word means to use obscure words in a sentence?

There isn't one perfect word for "using obscure words in a sentence". However, here are some options depending on the context and nuance you want to convey:

Neutral:

* Employ obscure words

* Utilize obscure words

* Use obscure words

* Incorporate obscure words

Negative:

* Obscure the meaning with obscure words

* Obfuscate the meaning with obscure words

* Jargonize (if the obscure words are technical or specific to a field)

* Pedantic (if the person using the obscure words is trying to sound smarter than they are)

Positive:

* Embellish the sentence with obscure words

* Enrich the sentence with obscure words

* Elevate the language with obscure words

* Use erudition (if the obscure words are used in a way that shows knowledge and sophistication)

The best choice depends on the specific situation and the desired effect.