kōng​dòng

vacuous

空洞 kōng​dòng
vacuous adjective
devoid of substance, meaning, or practical value; empty of content

The report is flowery but devoid of substance.

cavity noun
a hollow space or hole within a solid object

Due to long-term erosion, a huge cavity formed inside the rock.

Frequency

Movie subtitles
3.13 per million appears in 1% of films
Written text
4.21 per million

Details

HSK 2.0
Level 6

Sources

Definitions
CC-CEDICT