Meliorative
The Century Dictionary and Cyclopedia
Tending or serving to make better; that tends toward betterment.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
That
meliorates
;
curative
,
salutary
.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
tending to ameliorate
Word Usage
"Calling them special interests sounds pejorative, and independent group sounds meliorative."
Equivalent
bettering