right away

adverb

Without delay: directly, forthwith, immediately, instant, instantly, now, right off, straightaway, straight off. Idioms: at once, first off. See time.

Also, right off. Without delay, immediately, as in Can you bring our dinners right away? We're in a hurry, or We liked her right off. This idiom uses right as an intensifier and away in the sense of "at once," the latter usage dating from the 1500s and surviving only in such phrases as this one and fire away. It was first recorded in 1818. Also see right off the bat.

The adverb has 2 meanings:

Meaning #1: without delay; with no time intervening
  Synonyms: immediately, instantly, straightaway, straight off, directly, now, at once, forthwith, in real time

Meaning #2: at once (usually modifies an undesirable occurrence)
  Synonym: promptly