1. [adj]  actively engaged in paid work; "the working population"; "the ratio of working men to unemployed"; "a working mother"; "robots can be on the job day and night"
2. [adj]  (of e.g. a machine) performing or capable of performing; "in running (or working) order"; "a functional set of brakes"
3. [adj]  adopted as a temporary basis for further work; "a working draft"; "a working hypothesis"

WORKING(A) is a 10 letter word that starts with W.