adj. Of a word, having no diacritical mark; accentless.
adj. Of a vowel or syllable, pronounced with no, or little stress.
The Century Dictionary and Cyclopedia
Not accented; in music, receiving only a relatively slight rhythmical emphasis: used both of beats, pulses, or parts of measures, and of tones or notes that occur on such beats or parts.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. (used of vowels or syllables) pronounced with little or no stress
adj. used of syllables
Word Usage
"The time-travel scenes are unconvincing: Will runs into a Viking who speaks by grunting noncommittally and runs into some seventeenth-century Brits who speak in unaccented modern English."