extra is one of the 1000 most common headwords.
express - extra - eye

Pronunciation change

Adjective change

Positive
extra

Comparative
none

Superlative
none

  1. Something that is more than what you expected; exceeding; additional.
    I always put extra ketchup on my hamburger.

Adverb change

Positive
extra

Comparative
none

Superlative
none

  1. If something is extra good, large, special, etc., it is more so than normal.
    This shirt is extra large; it's too big for me.

Noun change

Singular
extra

Plural
extras

  1. (countable) An extra is a feature that that you usually pay more for when you buy something.
    She got the car with all the sporty extras.
  2. (countable) An extra is a person appearing in a movie who is not listed in the credits.