defensive

他对自己的体重非常敏感/容易辩解。

He's very ___defensive about his weight.

受到批评时，她以一种戒备/防卫的方式回应。

When criticized, she reacted in a ___defensive manner.

当她的观点受到质疑时，她变得防备起来。

She became ___defensive when her opinions were questioned.