改良

同義語・類似語

advance, betterment, melioration, ,

関連語

accommodation, airing, clarification, conservation, correction, development, enrichment, fix, fixture, mend, perfection, preservation, recovery, refinement, reform, reformation, refurbishment, repair, reparation, restoration, resurgence, revitalization, shift, status, transformation, upturn, ventilation, ,

反意語

decline, ,