as an extra
 

* 1.for good measure

2.in addition to

English Related Words* an extra

* any extra fee

* could you put an extra bed in the room

* do i have to pay extra for my baggage

* extra

* extra active-service

* extra bed

* extra bit

* extra block

* extra budgetary fund

* extra capacity

* extra charge

* extra costs

* extra dividend

* extra duty