Substandard
When you lose a soldier of the month board to somebody who you outrank, commonly uses slang and shortened words
PFC Lamb became substandard when he lost the soldier of the month board to PV2 Bitz in May of 2011
substandard
Less-than-satisfactory bass-output of your separately-amplified table-style woofer.
If you develop hearing-loss from playing your "music" (i.e., it's debatable whether that horrible crash-'n'-bash thumpy-thump cacophony truly qualifies as actual music!) too loud, then ANY audio-system will likely sound substandard to you.