Wasted time is time spent with little or no benefit, often on delays, distractions, or mistakes. It implies missed chances and inefficiency, and can leave regret when nothing useful gets done.
The time you enjoy wasting is not wasted time. Bertrand Russell
Any acceleration constitutes progress, Miss Glory. Nature had no understanding of the modern rate of work. From a technical standpoint the whole of childhood is pure nonsense. Simply wasted time. An untenable waste of time. Karel Čapek
Time is money. Wasted time means wasted money means trouble. Shirley Temple
Anything that is wasted effort represents wasted time. The best management of our time thus becomes linked inseparably with the best utilization of our efforts. Ted Engstrom
I wasted time writing films. I don't look back on those years as lost, but it wasn't what I should have been doing. James Salter
Regret for wasted time is more wasted time. Mason Cooley