The definition of extra is more, larger, bigger than expected or at an additional cost.(adjective)
An example of extra used as an adjective is in the sentence, "This coffee is extra hot," which means the coffee is hotter than was expected.
Extra means an additional person or thing.(noun)
Extra is defined as more than usual.(adverb)
An example of extra used as an adverb is in the phrase "extra happy," which means happier than usual.
See extra in Webster's New World College Dictionary
Origin: contr. < extraordinary; also < L extra, additional, extra < extra, adv., more than, outside: see extra-
Origin: L < exter, exterus: see external
See extra in American Heritage Dictionary 4
Origin: Probably short for extraordinary.
Origin: Latin extrā-
Origin: , from extrā; see eghs in Indo-European roots.
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