Extracost

1 clue
Expense over the original estimate.
Similar answers:
Acost
Acosta
Alextrebek
Alittlebitextra
Alittleextra
Ambidextrous
Ambidextrously
Anacostia
Anextradividend
Arridextradry
Atacost
Atacostof
Censusextract
Contracosta
Copperextractor
Dextral
Dextrorotatory
Dextrose
Donetoextract
Ettheextraterrestrial