Lexical (Adjective)

Of or relating to words; "lexical decision task".

Relational adjectives (pertainyms).

The researcher used a lexical database to analyze the frequency of word usage in the novel.
The lexical complexity of the poem made it difficult for non-native speakers to understand.
The lexical decision task required participants to identify whether a string of letters formed a valid word.
The lexical field of a word refers to the set of words related to it in meaning.
The lexical analysis of the text revealed a high frequency of words related to emotions and feelings.

Of or relating to dictionaries.

Relational adjectives (pertainyms).

The new edition of the dictionary features an improved lexical database with more detailed word entries.
The lexicographer's goal was to create a comprehensive lexical resource that would serve as a standard reference for linguists.
The online lexical search engine allows users to quickly look up words and their meanings in multiple languages.
The company's lexical database is updated regularly to keep pace with changing language usage and new word coinages.
The book is a valuable lexical companion for anyone studying the history and evolution of the English language.