an enemy / an opponent, a competitor / (historical) the other party in a lawsuit / 的: (historical) in the red-light district, a term of reference used between prostitutes and customers

的: (historical) (by extension from the red-light district usage) term of third-person reference: that guy, that one

(used after an adjective in the te-form) unbearable / unable to lose to; no match for

to rival

enemy / foe

criticism of a person due to their personal traits or private lifestyle; an ad hominem argument

an attack dog

aggressive, offensive

a full-scale attack, general attack

make a full-scale attack