be on the defensive; act against an attack
"The team had to defend their home ground fiercely after the opposing side launched a surprise counterattack."
fight against or resist strongly
"The senator said he would oppose the bill"
"Don't fight it!"
To ward off attacks against; to fight to protect; to guard.
"The knight rushed forward to defend his king from the charging enemy."
In plain English: To defend means to protect someone or something from being hurt, attacked, or criticized.
"The goalkeeper defended his net against the opponent's strong shot."
Usage: Use defend when actively protecting someone or something from an attack, while reserve the noun form defense for the act of protection itself. This verb requires a direct object indicating what is being protected and often pairs with prepositions like "against" or "from."
The word defend entered Middle English from the Old French verb for "warding off," replacing an earlier native Germanic term with a similar meaning. Its roots trace back to Latin, where it originally described the action of warding someone or something away.