Incoherent

Part of speech: adjective

Definitions

1. Unable to be understood due to lack of logical connection or clarity in expression
2. Lacking clarity or logical connection, making communication difficult and presenting information in a confused or disorganized manner
3. Characterized by speech or writing that fails to convey a clear meaning or logical sequence, resulting in confusion

Etymology: The Latin verb "haerere" meant "to stick" or "to cling," and "cohaerere," formed by adding "con-" ("together"), meant "to stick together." A present participle of that verb, "cohaerens," passed through Middle French "coherent" into English, where it came to describe something whose parts hold together logically. "Incoherent" simply adds the negating prefix "in-" to that adjective, so its literal sense is "not sticking together." The prefix is the Latin "in-," the same negative element found in words like "inactive" and "invalid." Its ancestry reaches back to the Proto-Indo-European negative "*ne," which is why the prefix looks so familiar across many English words. English had the root "coherent" first, and "incoherent" was built on top of it, so the negative form is the derived one.

Synonyms: rambling, confused, disjointed, illogical, muddled

Antonyms: clear, coherent, logical, articulate, understandable