developing (e.g. industry, town, economy)
possibility; potential; expandability
developing; developmental
playboy; playgirl; fast liver; person with an active sex life
boom (development, sales, etc.)
under development; in progress
(gay) cruising spot; (gay) pick-up joint (e.g. bar)
time evolution; temporal development
enrichment program (i.e. for high-performing students); supplementary curriculum