Definition of way off in English:

way off

adverb

US
  • 1Far away.

  • 2Far from the intended target; far away from an intention or aim; greatly mistaken, quite wrong.

adjective

US
  • Distant.

Origin

Mid 19th century; earliest use found in Slavery in America. From way + off.

Pronunciation

way off

/ˈweɪ ˌɒf/