right away is an adverb meaning "without delay or hesitation; with no time intervening". It carries 2 recorded senses.
without delay or hesitation; with no time intervening
“he answered immediately”
“found an answer straightaway”
“an official accused of dishonesty should be suspended forthwith”
“Come here now!”
at once (usually modifies an undesirable occurrence)
“he promptly forgot the address”
Definitions, synonyms and semantic relations for right away come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.