unfailing

1. ADJ If you describe someone's good qualities or behaviour as unfailing, you mean that they never change. 從不改變的[usu ADJ n]

He had the unfailing care and support of Erica, his wife. 他對他妻子，埃麗卡，從不改變的關愛和支持。

2. unfailinglyADV

He was unfailingly polite to customers. 他對顧客永遠都彬彬有禮。