gigachad noun2 •(slang) An exceptionally handsome man, having an even higher level of attractiveness than a Chad.How can I compete when I get mogged by gigachads as soon as I step outside? •(Internet) An extremely admirable man; a Chad among Chads.I heard Robert just donated $500 to Team Trees. What an absolute gigachad! formsGigaChads · Gigachads · gigachads