What is the term for a rhythm in which the stresses of notes are displaced so that emphasis is given to normally unstressed beats?

Answer: syncopation

Explanation:

It is well known that, in music, syncopation involves a variety of rhythms that are played together to make a piece of music, which causes part or all of a melody or piece of music to move.

It is said that syncopation is "an alteration or interruption of the regular flow of rhythm": a "placement of rhythmic tensions or accents where they would not normally occur."