used to protect someone or something against attack

These are purely defensive weapons, not designed for attack. 这些是纯粹的防御性武器，并不是用来进攻的。

Opposite: offensive (ATTACKING)

too quick to protect yourself from being criticized

When asked about his decision, he got very defensive. 当被问及他的决定时，他表现得戒备心很强。

There's no need to get so defensive! 完全没有必要如此有戒心。

in a sports event, trying to prevent the opposing player or players from scoring points, goals, etc.

He's currently the best defensive player on the team. 他目前是队里最好的防守队员。

ready to protect yourself because you are expecting to be criticized or attacked

The government has been put on the defensive, accused by critics of doing too little too late.

As always when forced on the defensive, she protected herself by criticizing others.

The harsh critique has put him on the defensive, and now he can't stand to hear any talk of his work.

Put on the defensive by mounting public anger, the president ordered an investigation into the matter.

In his new post, he was constantly on the defensive, explaining and justifying his every action.