uncrushable
adjective UK uk/ˌʌnˈkrʌʃ.ə.bəl/ us/ˌʌnˈkrʌʃ.ə.bəl/
（指人）不可能使其失去希望（或自信的）
If someone is uncrushable, it is impossible to make them lose hope or confidence.
In order to succeed in life you have to have an uncrushable belief in yourself. 你必须对自己有着不可动摇的信心，才能取得人生的成功。
（人造纤维布）不起褶的，不起皱的
Uncrushable cloth or clothing is designed to stay free of unwanted folds.
an uncrushable hat 不起皱的帽子