Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Her team had been refining an AI tool, set to launch in January, which felt suspiciously like training a replacement.

From The Wall Street Journal • Dec. 18, 2025

Democratic staff had been refining it since at least 2019, when they released a white paper.

From Slate • Oct. 27, 2021

The cooking may not have been in the vanguard any longer, but Mr. Portale was still wringing fresh pleasures out of ideas he had been refining for years.

From New York Times • Feb. 4, 2020

Burt had been refining the State Department option.

From Time Magazine Archive

He had been refining his sketches of Persepolis ever since we got back.

From "Darius the Great Is Not Okay" by Adib Khorram