ameliorative

noun 0.898

improvement

noun 0.744

betterment

noun 0.711

bettering

noun 0.689

improvability

noun 0.642

emendation

noun 0.641

meliorism

noun 0.637

impro

noun 0.615

enhancement

noun 0.610

meliorist

noun 0.602

pejoration

noun 0.600

assuagement

noun 0.587

improver

noun 0.585

amendment

noun 0.583

upliftment

noun 0.579

perfectibility

noun 0.578

mitigation

noun 0.571

amends

noun 0.570

upgradation

noun 0.556

modification

noun 0.555

worsening

noun 0.552

upgrading

noun 0.543

ennoblement

noun 0.543

alteration

noun 0.543

better

noun 0.542

exacerbation

noun 0.536

advancement

noun 0.535

amenity

noun 0.534

refinement

noun 0.532

remedial

noun 0.529

brightening

noun 0.524

upgrade

noun 0.523

reform

noun 0.522

amplification

noun 0.522

palliation

noun 0.521

adaptation

noun 0.520

strengthening

noun 0.517

amination

noun 0.517

beneficiation

noun 0.517

uplift

noun 0.516

altering

noun 0.515

beautification

noun 0.515

improv

noun 0.514

reformation

noun 0.513

aggravation

noun 0.512

amiability

noun 0.511

evolvement

noun 0.510

correction

noun 0.508

amiableness

noun 0.506

betterness

noun 0.504

lessening

noun 0.504

acclimation

noun 0.502

enrichment

noun 0.502

reablement

noun 0.500

friendly amendment

noun 0.500