Meaning a «weak out»

"Weak out" a wah expression weh people use when dem a talk bout how sumideh or sumtn a lose dem power or dem energy eena a situation. Eena di context a music war or clash, if a artiste "weak out di war," it mean seh di quality a dem song dem a drop or dem nah deliver di same heat like how dem did start out. It show seh di person a get tired or dem just nuh have nuh more vibes fi keep up di fight. People usually use it fi mock a artiste weh dem feel seh a lose di battle.