jiǔ'ér​jiǔ​zhī

over time

久而久之 jiǔ'ér​jiǔ​zhī
over time idiom
as time passes or in the fullness of time, often leading to a gradual change or development

He sticks to running every day; over time, his body has become stronger.

Frequency

Movie subtitles
0.330 per million appears in 0% of films
Written text
2.90 per million

Sources

Definitions
CC-CEDICT