Word that means "of or relating to 'vocabulary'"

I'm looking for an adjective that would mean essentially the equivalent to the meaning some might ascribe to the made up word "vocabularic." Is there a word that means "of or applying to vocabulary?"

For example: "I hope this utilitarian endowment proves itself by aiding in the construction of constructs and the eschewing of [vocabularic] obfuscation."

I realize this word is found in some dictionaries, such Wiktionary, but I was wondering if a more general, scholarly, or accepted word is commonly used.

Solution 1:

lexical

Relating to the words or vocabulary of a language _(Oxford)

...eschewing of lexical obfuscation