phrasal
1. : in a standing position
jumped and landed on his feet
2. : in a position to go on
the nomination put him on his feet
: in an established position or state
the business is finally on its feet
3. : in a recovered condition (as from illness) : at a stage of being able to resume work or activity
4. : without obvious deliberation or hesitation : extemporaneously
a debater should be able to think on his feet