unstressed

adjectives

not bearing a stress or accent
"short vowels are unstressed"
antonym
is similar to
(music or poetry) ending on an unaccented beat or syllable
"a feminine ending"
is similar to
(used of vowels or syllables) pronounced with little or no stress
"a syllable that ends in a short vowel is a light syllable"; "a weak stress on the second syllable"
is similar to
not emphasized