busiest Play adjectiveHaving a great deal to do. SYNONYMS at work (on)bustlingbusy as a beeemployed inenergeticengaged inengrossed inhard at ithard at work (on)hard-pressedhave one's hands fullimmersed inindustriousinvolved inlabouring atlivelyoccupied (in)on the goon the hopon the jobpreoccupied withrushed off one's feet (with)slaving attime-poortirelesstoiling atworking atwrapped up (in/with)
