The synonym is "opposite"
Some synonyms for "banking" are terms like investment, lending, finance, and funding.
Some synonyms for agitator are disruptor, dissident, malcontent, anarchist, advocate.Some antonyms for agitator are conciliator, peacemaker, conservative, moderate, arbitrator.
Synonyms: prosperous, lucky, promising, hopeful, fortunate, favorable, encouraging, advantageous Antonyms: inauspicious, unfortunate, unlucky, ominous, unhappy
An antonym for proximity would be, "remoteness." A synonym would be, "nearness."