took off
phrasal verb.to leave the ground and begin to fly, or to leave a place suddenly. You can also use it to describe a business or idea that becomes successful very quickly.
phrasal verb.to become airborne; to depart a location abruptly; or to experience a rapid increase in popularity or success. Intransitive in these senses, though the transitive form 'take off' (to remove) is distinct.
“The plane took off on time despite the snow.”
“After the celebrity shared the video, the new app took off and gained millions of users overnight.”
“The startup's valuation took off following the successful series A funding round, exceeding all initial market projections.”
used without a direct object when referring to flight or sudden success.
distinguish between the intransitive 'success' sense and the transitive 'remove clothing' sense; the past tense 'took' is a common irregular verb check for A2 learners.
in the sense of flying, 'take off' is intransitive and does not require 'the ground' as an object.