improvement (n.)

• about-face
• accommodation
• adaptation
• adjustment
• advance
• alteration
• amelioration
• amendment
• apostasy
• apprenticeship
• betterment
• break
• breaking
• breeding
• change
• changeableness
• conditioning
• continuity
• convalescence
• conversion
• cultivation
• defection
• degeneration
• deterioration
• development
• deviation
• difference
• discipline
• discontinuity
• divergence
• diversification
• diversion
• diversity
• drill
• drilling
• enhancement
• exercise
• fitting
• flip-flop
• fostering
• gain
• grooming
• housebreaking
• increase
• instauration
• melioration
• mitigation
• modification
• modulation
• nurture
• overthrow
• practice
• preparation
• progress
• qualification
• raising
• re-creation
• readying
• rearing
• rebirth
• reclamation
• recovery
• recrudescence
• recuperation
• redemption
• reenactment
• reform
• reformation
• regeneration
• rehabilitation
• rehearsal
• reinstatement
• remaking
• renascence
• renewal
• repair
• replacement
• restitution
• restoration
• reversal
• reversion
• revival
• revivification
• revolution
• rise
• shift
• switch
• training
• transition
• turn
• turnabout
• upbringing
• upheaval
• variation
• variety
• worsening