厳重
Common
I-adj
Noun
1
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi)
strict;severe;stringent;rigorous;rigid;firm;strong;secure
トップエンジニアが、その車に一連の厳重な検査を加えた。
The top engineer put the car through a series of rigorous tests.