absorbed absorbed in abstracted at it at work buried in buried in thought busy caught up in colonized contemplating contemplative devoted devoted to empeopled employed engaged engaged in thought engrossed engrossed in engrossed in thought full of business hard at it hard at work immersed in immersed in thought in harness inhabited intent intent on introspective involved lost in lost in thought meditating meditative monomaniacal monopolized obsessed on duty on the go on the hop on the job on the jump on the move on the run peopled populated populous preoccupied rapt settled single-minded studious studying submerged in swept up taken up with tenanted tied up totally absorbed working wrapped in wrapped in thought wrapped up in