It would be sort of the opposite of a melisma.
We do this every Sunday in one of the services I play for.
The psalm is sung by the cantor, I pay careful attention to the words and change chords when they get to the right spot, often the last accented syllable of the line. Essentially they try for speech rhythm rather than steady eighth notes. At least I do when I sing the part.
Is that what you're talking about, or is there something different?