is similar to
on the job
"had been at work for over an hour before her boss arrived"
is similar to
doing arduous or unpleasant work
"drudging peasants"; "the bent backs of laboring slaves picking cotton"; "toiling coal miners in the black deeps"
is similar to
having ones attention or mind or energy engaged
"she keeps herself fully occupied with volunteer activities"; "deeply engaged in conversation"
is similar to
kept occupied or engaged
"she's tied up at the moment and can't see you"; "the phone was tied up for almost an hour"
is similar to
busy or occupied with
"what have you been up to?"; "up to no good"
see also
characterized by care and perseverance in carrying out tasks
"a diligent detective investigates all clues"; "a diligent search of the files"
see also
having your services engaged for; or having a job especially one that pays wages or a salary
"most of our graduates are employed"