be disappointing be found wanting be inferior be insufficient collapse come short crash decline fail fail of fall fall away fall dead fall down fall flat fall in fall shy fall stillborn fall through fizzle fizzle out follow go to smash go wrong have nothing on kick the beam lack lag lose ground miss miss out miss the mark not answer not approach not bear inspection not come near not compare not hack it not make it not make out not measure up not pass muster not qualify not stretch not suffice peter out play second fiddle rank under run short serve slump stop short subserve turn sour want