extra
https://gyazo.com/0e55f9e4870b60e2528bbc8dd1abc2a3
source: GO-GO~
adjective
added to an existing or usual amount or number:
〖名詞の前で〗追加の, 余分の, 特別の, 臨時の
e.g. an extra thirty-five cents an hour.
adverb
1. as submodifier to a greater extent than usual; especially:
｟くだけた話｠ 〖形容詞副詞の前で〗格別に, いつもより
e.g. he is trying to be extra good.
2. in addition:
余分に, 追加で, 割り増しで (!主にcost, charge, payなどの〖動詞〗の後で)
e.g. installation will cost about $60 extra.
noun
an item in addition to what is usual or strictly necessary:
(通常･必要以上の)余分(なもの), 予備.
e.g. I had an education with all the extras.
an item for which an additional charge is made:
(標準仕様以外の･追加料金のかかる)オプション製品［サービス］; 追加料金
e.g. the price you pay includes all major charges—there are no hidden extras.
a person engaged temporarily to fill out a scene in a movie or play, especially as one of a crowd:
〘映･テレビ〙 (群衆役などの)エキストラ.
e.g. the film used an army of extras.
dated a special issue of a newspaper:
(新聞などの)号外; 臨時増刊号
e.g. she stood under an awning and read the extra.
ORIGIN
mid 17th century (as an adjective): probably a shortening of extraordinary, suggested by similar forms in French and German.