YOU SAID:

the dog ran away speedily

INTO JAPANESE

犬はすみやかに逃げた

BACK INTO ENGLISH

The dog ran away promptly

INTO JAPANESE

犬は早速逃げた

BACK INTO ENGLISH

The dog ran away quickly

INTO JAPANESE

犬はすぐ逃げた

BACK INTO ENGLISH

The dog ran away at once

INTO JAPANESE

犬はすぐに逃げた

BACK INTO ENGLISH

The dog ran away at once