I. adjective
1.
engaged in activity
I can't stop to talk. I'm busy
Synonyms: employed, engaged, occupied, working; compare assiduous
Idioms: at work, on the fly
Contrasted words: idle, inactive
Antonyms: free
2.
Synonyms: bustling , fussy, hopping, humming, hustling, lively, popping
3.
Synonyms: impertinent 2, intrusive, meddlesome, ||nebby, obtrusive, officious, polypragmatic
II. verb
Synonyms: engage 4, engross, immerse, occupy, soak