buildup accretion building happiness strengthening construction development improvement growth increase rebuilding accumulation backlog mass load enlargement reparation reconstruction renewal rejuvenation restoration reform creation upgrading renovation transformation refurbishment impenitence remorselessness satisfaction indifference meanness joy mercilessness hurtfulness disdain defiance elevation approval comfort contentedness shamelessness reward impenitency heartlessness incorrigibility pitilessness ruthlessness irresponsibility hardheartedness stubbornness maintenance preservation conservation upkeep protection repair prolongation safeguarding safekeeping sustainment retainment support servicing service aftercare care help aid assistance relief succor succour assist kindness boon good goodness virtue charity redundancy