unaccented

[ uhn-ak-sen-tid, uhn-ak-sen- ]

/ ʌnˈæk sɛn tɪd, ˌʌn ækˈsɛn- /

not accented; unstressed.

Origin of unaccented

First recorded in 1590–1600; un-¹ + accent + -ed²

He is self-aware enough to make them comfortable with his self-deprecating humor and unaccented English.

My Sexy American Sikh Valentine |Jesse Bawa |February 14, 2014 |DAILY BEAST
But the shock of hearing someone who looks like Grout sing in unaccented Arabic soon dissipated and the crowd fell deadly silent.

Boston Irish Girl Jennifer Grout Is The Unexpected Star Of ‘Arabs Got Talent’ |Michael Pizzi |December 5, 2013 |DAILY BEAST
Not helping matters: the fact that everyone speaks in unaccented American English.

‘Zero Hour’: Is This the Dumbest Show Ever to Air on TV? |Jace Lacob |February 13, 2013 |DAILY BEAST
Shakespeare uses this unaccented gliding ending more in his later works to give an easier more unconstrained movement.

An Essay Toward a History of Shakespeare in Norway |Martin Brown Ruud

The syllable having the grave accent is, as we should say, unaccented.

The Roman Pronunciation of Latin |Frances E. Lord
The foot consisting of an unaccented followed by an accented syllable is called an iambus.

Elementary Guide to Literary Criticism |F. V. N. Painter
An accented syllable followed by two unaccented ones, and coming under the conditions given above, constitutes a treble rhyme.

A Handbook of the English Language |Robert Gordon Latham
It is called feminine when it follows an unaccented syllable.

English Verse |Raymond MacDonald Alden, Ph.D.