the act or process of developing; growth; progress

child development; economic development.

a significant consequence or event

recent developments in the field of science.

a developed state or form

Drama reached its highest development in the plays of Shakespeare.

Music . the part of a movement or composition in which a theme or themes are developed.

a large group of private houses or of apartment houses, often of similar design, constructed as a unified community, esp. by a real-estate developer or government organization.

Chess . the act or process of developing chess pieces.

Mining . the work of digging openings, as tunnels, raises, and winzes, to give access to new workings, and of erecting necessary structures.

noun

decline , decrease , stoppage , abortion , atrophy , embryo , undevelopment

noun

adding to , addition , adulthood , advance , advancement , advancing , augmentation , augmenting , boost , buildup , developing , elaborating , enlargement , evolution , evolvement , evolving , expansion , flowering , hike , improvement , increase , increasing , making progress , maturation , maturing , maturity , ongoing , perfecting , progress , progression , reinforcement , reinforcing , ripening , spread , spreading , unfolding , unraveling , upgrowth , upping , change , circumstance , conclusion , denouement , event , eventuality , eventuation , issue , materialization , occurrence , outcome , phenomenon , result , situation , transpiration , turn of events , upshot , growth , accretion , multiplication , proliferation , amelioration , betterment , melioration , episode , happening , incident , news , occasion , thing , elaboration , formation , hypertrophy(excessive development) , phase , unfoldment