sōng​dòng

loose

松动 (鬆動) sōng​dòng
loose verb
physically loose, slack, or no longer firmly fixed in place

His teeth are starting to get a bit loose.

soften verb
to become less rigid or strict regarding policies, attitudes, or tones of voice

Seeing the child crying continuously, the mother's tone finally softened.

uncrowded verb
describing a space that is not packed or has become less congested

After the peak hours passed, the subway became much less crowded.

Frequency

Movie subtitles
0.480 per million appears in 0% of films
Written text
4.54 per million

Sources

Definitions
CC-CEDICT