頑丈
adjective
solid, strong, sturdy
B2
柔らかくないか圧力に屈さない。
solid, strong, sturdy
がんじょう
B2Upper-Intermediate
B2
この箱は頑丈なので、重い道具を入れても壊れにくい。
This box is sturdy, so it won't break easily even if you put heavy tools in it.