idle

idle [adj1] not used; out of action abandoned, asleep, barren, closed down, dead, deserted, down, dusty, empty, gathering dust*, inactive, inert, jobless, laid-off, leisured, mothballed, motionless, on the bench*, on the shelf*, out of operation, out of work*, passive, quiet, redundant, resting, rusty, sleepy, stationary, still, uncultivated, unemployed, unoccupied, untouched, unused, vacant, void, waste, workless; concepts 542,560 —Ant. active, busy, employed, productive, used, working  idle [adj2] lazy at rest, indolent, lackadaisical, resting, shiftless, slothful, sluggish, taking it easy*; concepts 401,538 —Ant. ambitious, busy, diligent, hustling, productive idle [adj3] worthless, ineffective abortive, bootless, empty, frivolous, fruitless, futile, groundless, hollow, insignificant, irrelevant, not serious, nugatory, of no avail*, otiose, pointless, rambling, superficial, trivial, unavailing, unhelpful, unnecessary, unproductive, unsuccessful, useless, vain; concepts 267,560 —Ant. effective, important, productive, worthwhile