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.
堅牢堅固けんろうけんご Noun I-adj English jmdict 1 noun (common) (futsuumeishi) adjectival nouns or quasi-adjectives (keiyodoshi) yojijukugo firm and solid;stout and durable