The opposite of "show talent" could refer to showcasing a lack of ability or skill. Some possible antonyms for "show talent" might include "exhibit incompetence," "demonstrate ineptitude," or "display inadequacy." Alternatively, antonyms could be more broadly focused on concealing or withholding one's talents or abilities. For example, antonyms for "show talent" might include "hide potential," "suppress expertise," or "disguise proficiency." In either case, the antonyms highlight the opposite values or behaviors associated with exhibiting talent, which might include shame, modesty, disinterest, or an over-reliance on natural ability rather than hard work or dedication.