waste of time(n = noun.act) - the devotion of time to a useless activity; "the waste of time could prove fatal"
is a kind of dissipation, waste, wastefulness

access time, against time, ahead of its time, ahead of time, alaska standard time, alkali waste, all the time, arrival time, at a time, at one time, at the same time, atlantic standard time, atlantic time, behind time, benting time, bering standard time, bering time, big time, big time operator, biological time, body waste, breakfast time, breathing time, buy time, central standard time, central time, checkout time, civil time, clock time, closing time, clotting time, command processing overhead time, common time, compensatory time, coordinated universal time, cosmic time, daylight-saving time, daylight-savings time, departure time, do time, double time, duple time, earth-received time, eastern standard time, eastern time, elapsed time, ephemeris time, extended time scale, extra time, face time, fast time scale, father time, flex time, food waste, for the first time, for the time being, four-four time, free time, from time to time, full time, geologic time, geological time, good time, greenwich mean time, greenwich time, hadean time, half time, hard time, harvest time, have a good time, hawaii standard time, hawaii time, haying time, high time, high-level radioactive waste, human waste, in due time, in good time, in no time, in real time, in the nick of time, in time, just in time, kill time, lay waste, lay waste to, laying waste, lead time, leisure time, light time, local time, long time, low-level radioactive waste, lunar time period, mark time, mean solar time, mean time, morning time, mountain standard time, mountain time, musical time, musical time signature, of all time, on time, one at a time, one time, one-way light time, pacific standard time, pacific time, part time, period of time, permissive waste, point in time, prime time, processing time, quadruple time, question time, quick time, radioactive waste, ravages of time, reaction time, real time, regulation time, relaxation time, residence time, response time, round-trip light time, running time, seek time, serve time, show time, sidereal time, since a long time ago, slow time, slow time scale, small time, space time, spacecraft clock time, spacecraft event time, spare time, standard time, starting time, take time, take time by the forelock, take time off, terrestrial dynamical time, terrestrial time, time, time and a half, time and again, time and motion study, time and time again, time being, time bill, time bomb, time capsule, time clock, time constant, time deposit, time deposit account, time draft, time exposure, time frame, time immemorial, time interval, time lag, time limit, time loan, time machine, time note, time of arrival, time of day, time of departure, time of life, time of origin, time of year, time off, time out, time out of mind, time period, time plan, time policy, time saving, time scale, time series, time sharing, time sheet, time signal, time signature, time slot, time study, time to come, time unit, time value, time zone, toxic industrial waste, toxic waste, toxic waste area, toxic waste dump, toxic waste site, track-to-track seek time, transmission time, travel time, triple time, turnaround time, two time, unit of time, universal time, waste, waste away, waste basket, waste material, waste matter, waste of effort, waste of energy, waste of material, waste of money, waste one's time, waste paper, waste pipe, waste product, waste time, when the time comes, while away the time, work time, yukon time