1. Without an accent: This refers to a pronunciation that is considered standard or neutral, without any regional or foreign pronunciation characteristics. This is often used in linguistics, phonetics, and language learning. For example, someone might say that a word is pronounced "non-accented" in American English, meaning it doesn't have a specific regional accent like a Southern or New York accent.
2. Without accent marks: This refers to the absence of diacritical marks above or below letters in written language. These marks can change the pronunciation of a letter or indicate a specific sound. For example, the word "résumé" has an accent mark on the "e" in French, but in English it is often written without the accent mark.
It's important to understand the context to determine the meaning of "non-accented". If the context is about pronunciation, it refers to the absence of a regional accent. If the context is about writing, it refers to the absence of diacritical marks.