old and clumsy 老态龙钟

“老态龙钟”，汉语成语，形容年老体衰，行动不灵便。可以翻译为“old and clumsy，senile and doddering或weighed down with age”。

例句：

虽说他已是老态龙钟，但思路依然清晰敏捷。

Although he is old and doddering in manners, he is agile and alert in mind.