high time—
1. (also: full time) time when smth. should be done at once:
- Tom was beginning to feel that it was high time for him to be getting to regular work again.
2. (in the phrase “have a high time”) have enjoyable, noisy and joyful time:
- The Johns had a high time, drinking brandy and eating fried hog.
low time—a short period of time:
- Never make a negative decision in the low time. Never make your most important decisions when you are in your worst moods.
Note: The expression does not correlate in meaning with the phrase down time—
1. the time when a machine or computer is not operating:
- The amount of “down time” due to faulty machine operation is very low.
2. (coll.) an opportunity for rest; time off:
- People talk of “enjoying the down-time” when they are having a break.
See also: peak time / up time.