The term "overly solicitous" means excessively attentive or caring, which can come across as insincere or even annoying. Antonyms for this phrase could include "careless," "indifferent," "unconcerned," "unfeeling," and "uncaring." These terms describe a lack of interest or effort to help others, which is the opposite of being overly solicitous. Other antonyms could be "aloof," "distant," "detached," and "reserved," which indicate a desire for privacy or separation from others. In contrast, being overly solicitous can be seen as pushy or overbearing, whereas the antonyms offer a sense of independence or detachment.