In a fraction of a second synonyms | adverbs

Synonyms for In a fraction of a second as an Adverb

• instantly
• immediately
• at once
• straight away
• promptly
• on the spot
• forthwith
• in the same breath
• then and there
• pronto
• in the twinkling of an eye
• on the instant
• posthaste
• quick as lightning
• in the bat of an eye