The word "detachedly" means to do something in an unemotional or objective manner. Its antonyms are words that convey emotions and subjectivity. To act passionately, emotionally or immersively are the opposite of being detachedly. Being invested, committed, intimate, engaged or involved are other antonyms that stand for the opposite of detachedly. Words like fervently, zealously, ardently, or fondly express strong feelings and stand in stark contrast to the detachment seen in "detachedly." To show passion and emotion in one's behavior is the opposite of acting objectively, rationally, or indifferently.