To delete a liability adjustment in QuickBooks, navigate to the "Lists" menu and select "Chart of Accounts." Locate the account associated with the liability adjustment, then right-click and choose "Delete." Confirm the deletion and choose "Yes" to remove the adjustment. Alternatively, access the liability adjustment from the "Liability Adjustment" window, select it, and click "Delete." Confirm the action to remove the adjustment. Remember to review and reconcile financial records after deletion to ensure accuracy. Deleting liability adjustments should be approached with caution, and it's advisable to consult with a financial professional if unsure about the implications.