working

adjective

1
serving to permit or facilitate further work or activity
discussed the working draft of a peace treaty
they need working agreements with their neighbor states on interstate projects
2
actively engaged in paid work
the working population
the ratio of working men to unemployed
3
(of e.g. a machine) performing or capable of performing
in running (or working) order
a functional set of brakes
4
adopted as a temporary basis for further work
a working draft
a working hypothesis
5
adequate for practical use; especially sufficient in strength or numbers to accomplish something
the party has a working majority in the House
a working knowledge of Spanish

Also useful for “working”:Scrabble— High-value letters — see what it scores