The other word is Retrosexual that is a man as the anti-metrosexual

Genuine guys are sometimes known as retrosexuals, to distinguish them from metrosexuals, who are men with the good taste of gay men, only they’re straight. Metrosexuals are scrupulous about their grooming and are great consumers of men’s cosmetic products. They use hair gel. Retrosexuals are scared of hair gel. Some people think that retrosexuals automatically have Neanderthal views about women, but this is not the case. A retrosexual is simply someone who doesn’t know the difference between teal and aqua, and frankly couldn’t give a damn.

[< metro- (in METROPOLITAN a.) + SEXUAL a., punningly after HETEROSEXUAL a. and n.] n. A man (esp. a heterosexual man) whose lifestyle, spending habits and concern for personal appearance are likened to those considered typical of a fashionable, urban, homosexual man. Debate surrounds the term's use as a theoretical signifier of gender deconstruction and its associations with consumerism. Current gender scholars view metro sexuality as representative of the embracing of relational understanding in addition to its lifestyle and aesthetic implications.

i think the opposite of metrosexual is retrosexual….

The opposite is retrosexual. A man who rejects focus on physical appearance