• WordNet 3.6
    • adj unstressed not bearing a stress or accent "short vowels are unstressed"
    • ***
Chambers's Twentieth Century Dictionary
    • adj Unstressed un-strest′ not pronounced with stress, unaccented.
    • ***


In literature:

It is clear that this habit led to an inability to maintain a long quantity in an unstressed syllable.
"Society for Pure English Tract 4" by John Sargeaunt
One of these assumptions is that the concrete is initially unstressed.
"Some Mooted Questions in Reinforced Concrete Design" by Edward Godfrey
The monosyllabic foot in which the unstressed element is missing offers no difficulty.
"The Principles of English Versification" by Paull Franklin Baum
In the unstressed forms of dissyllables, as adv.
"A Middle High German Primer" by Joseph Wright
Manx goes as far as northern Scottish in dropping unstressed final vowels, e.g.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5" by Various

In news:

In casual speech, it's common to neutralize the vowels in unstressed syllables, so that "benefit" becomes "ben-uh-fit" and "integrity" becomes "in-teg-ruh-ty".
Unstressed sows that aren't fighting.

In science:

As an example, consider a rod lying at rest parallel to the x-axis in S whose unstressed proper mass density is 0 and whose proper volume is V0.
On the concept of relativistic mass