- improvement - the act of improving something; "their improvements increased the value of the property"
--1 is a kind of change of state
--1 has particulars:Derived form: verb improve1 - improvement, betterment, advance - a change for the better; progress in development
--2 is a kind of transformation, transmutation, shift
--2 has particulars:revival, resurgence, revitalization, revitalisation, revivification; refinement, elaboration; adjustment, accommodation, fitting; conservation, preservation; recovery Derived form: verb improve2 - improvement, melioration - a condition superior to an earlier condition; "the new school represents a great improvement"
--3 is a kind of condition, status
Antonyms: decline, declination
--3 has particulars:betterment; development; reformation; renovation, restoration, refurbishment Derived form: verb improve2