Slack

Slack is intentionally overstating budgeted expenses or understating budgeted revenues in order to cope with uncertainty, make performance appear better, or make room for potential budget cuts.

Definitions

According to Managerial Accounting by Braun, Tietz (5th edition),

Slack. Intentionally overstating budgeted expenses or understating budgeted revenues in order to cope with uncertainty, make performance appear better, or make room for potential budget cuts.