By/in leaps and bounds

Pro Tip 1/3

Positive Connotation

Used to express significant improvements or progress in a positive aspect.

Since starting the new training program, the athletes' performance has increased by leaps and bounds.

Pro Tip 2/3

Metaphorical Use

It's a metaphor suggesting giant, vigorous leaps, rather than literal jumping.

The technology in smartphones is advancing by leaps and bounds yearly.

Pro Tip 3/3

Informal Expression

Common in casual conversation or informal writing, but not formal documents.

Their small business has grown by leaps and bounds this quarter.