Shirabe
堅牢堅固

堅牢けんろう

I-adj Noun
English jmdict
1
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi) solid;strong;sturdy;durable;stout
建築物は、現在では昔よりずっと堅牢になっている。
Buildings are much stronger now than they used to be.
English jmdict
1
noun (common) (futsuumeishi)adjectival nouns or quasi-adjectives (keiyodoshi) yojijukugo firm and solid;stout and durable