That breakthrough lasted all of one day.
That breakthrough lasted one day.
What's the difference in meaning between the sentences above?
It's an idiomatic and slightly sarcastic way of suggesting that the breakthrough did not last long. Here's another example. Tom paid all of $100 for this car .
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
It's an idiomatic and slightly sarcastic way of suggesting that the breakthrough did not last long.
Here's another example. Tom paid all of $100 for this car. The suggestion here is that the car is not worth even that much.
Clive
To comment further on Clive's answer, "all of" might have a melancholic tone to it. For example:
"After much pleading on my part, Sally and I got back together again, but it lasted all of one day."