Beyond what is due, usual, expected, or necessary; additional; supernumerary; also, extraordinarily good; superior; as, extra work; extra pay.(adjective)
Something in addition to what is due, expected, or customary; something in addition to the regular charge or compensation, or for which an additional charge is made; as, at European hotels lights are extras.(noun)
source: webster1913
Something in addition to what is due, expected, or customary; esp., an added charge or fee, or something for which an additional charge is made.(noun)
source: webster1913
adverb (r)
unusually or exceptionally(adv.all)
Example: An extra fast car.
source: wordnet30
adjective satellite (s)
more than is needed, desired, or required(adj.all)
Example: Found some extra change lying on the dresser.
Extra ribs as well as other s.