IPA: /ˈsoʊləsɪst/
KK: /ˈsoʊləsɪst/
A person who makes a grammatical mistake or uses language incorrectly.
The solecist confused the audience with his incorrect use of words.
Solecist → It is formed from "solecismus" (from Greek "solecismos", meaning a mistake in language or grammar) and the suffix "-ist" (meaning a person who practices or is concerned with). A solecist is a person who makes grammatical mistakes or uses incorrect language.
Think of someone who makes 'mistakes in language' ('solecismus') — that's why a solecist is a person who uses language incorrectly.