extra
adjective
uk/ˈekstrə/ usmore than or added to what is usual or what already exists:
Without the extra help, campus leaders may face tough choices, such as whether to cut some programs.
extra cash/funding/money
extra compensation/income/pay
extra charge/expense/fee
go the extra mile
to make more effort than is expected of you:
Our state government functions as well as it does because our employees routinely go the extra mile.
extra
adverb
uk/ˈekstrə/ usmore than is usual or than exists already:
The average family of four is spending anywhere from $7 to $10 extra a week on groceries alone, compared to a year ago.
I'm quite happy to pay extra if the quality is right.
extra
noun [ C ]
uk/ˈekstrə/ ussomething that is added to what is usual, and that may cost more:
Borrowers are already burdened with mortgage extras such as arrangement fees, legal bills, and life assurance cover.
The telephone call charges seem reasonable but there is the hidden extra of a £35 connection charge.
On average, £1,700 of optional extras are ordered on every car that leaves the plant.