Light rhyme

Light rhyme designates a weakened, or unaccented, rhyme that pairs a stressed final syllable with an unstressed one. A rhyme of this kind is also referred to as a wrenched rhyme since the pronunciation of the unstressed syllable is forced into conformity with the stressed syllable of its rhyme mate (eternity/free). Light rhymes are commonly found in music where words are sung with an unnatural emphasis on the final syllable.
Examples.
In the 1917 poem “Preludes” T.S. Eliot used the light rhyme to evoke the uneasiness felt by an individual isolated from society in a modern urban setting.