The best replacement for residual is institutional.

The best alternatives to residual are rated as following:
★★★★★  institutional
★★★  error
★★  predicted
★  leverage
★  fitted values
★  error term
★  royalty
★  linear income
★  salvage value
★  residual
★  standard residual
★  balloon payment
★  static pressure
  zero sequence
  regression
  compensatory
  fitted value

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Speaking about residual, one probably shouldn't forget about tube feeding.

Other search terms related to residual and their ratings are:
★★★★★ tube feeding
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