gegnerischer
Gegnerischer is a German attributive adjective formed from Gegner, meaning opponent, and the suffix -isch. It describes something relating to an opponent or opposition, such as a plan, position, or strategy associated with an adversary. The form gegnerischer is particularly used for masculine singular nouns without a determiner (article) or after an indefinite article, while other gendered and determiner contexts use different endings (eg, gegnerische, gegnerisches).
Grammatically, gegnerischer follows the standard German adjective declension. With definite articles der, die, das the weak
Usage and nuance: gegnerischer commonly appears in contexts involving evaluation or discussion of the opposing side,