No definitions found for 'do a disservice'
Perhaps one of these:
datagram,
diatessaron,
death grip,
dedecorous,
death square,
dutes auriga,
ditcher,
death grapple,
ditch reed,
dutch harbor,
dutch iris,
dead ground,
death chair,
death's-herb,
dodgery,
dyadic arithmetic,
dedecorate,
dedecoration,
dutch rush,
data service unit,
dowitcher,
dodger