unsecured

US /ˌʌn.sɪˈkjʊrd/
UK /ˌʌn.sɪˈkjʊrd/
1.

không an toàn

(of a loan) made without an asset given as security.

2.

không an toàn

not made secure or safe.

:
the maid had been responsible for leaving the room unsecured