lessening
1. [ noun ] a change downward
Synonyms: decrease drop-off
Examples:

"there was a decrease in his temperature as the fever subsided" "there was a sharp drop-off in sales"

Related terms: increase change sinking waning dwindling attrition shrinking casualty drop_off
2. [ adjective ] becoming less in dimension or degree
Examples:

"the lessening distance between us"

Related terms: decreasing
Similar spelling:   loosening
  Lessman