understaffed
adjective uk/ˌʌn.dəˈstɑːft/ us/ˌʌn.dɚˈstæft/ (also undermanned)
（商店、企业或机构）人手不够的，人员配备不足的
If a shop, business, or organization is understaffed, it does not have enough employees.
The hospital was desperately understaffed. 这家医院员工严重不足。
Synonyms: short-handedshort-staffed
Opposite: overstaffed