enhance - diminish traffic sign on blue sky

enhance diminish traffic sign blue sky improve reduce boost decrease elevate lessen augment minimize strengthen weaken increase lower enrich dwindle upgrade shrink heighten deplete refine curtail bolster undermine intensify cut impair ameliorate downsize enhancing deteriorate reinforce contract refurbish slump polish erode optimize wane strengthening retrench enrichment lessening perfect diminishing fortify shrinkage maximize worsen