swappingonthefly
phraseUK /ˈswɒpɪŋ ɒn ðə flaɪ/
US /ˈswɑːpɪŋ ɑːn ðə flaɪ/
Changing something quickly while you are doing it.
The game lets you swap characters on the fly without stopping.
RELATED WORDS
OTHER MEANINGS
2. Replacing a part while a machine keeps running.
The server supports swapping disks on the fly.
3. Making a decision suddenly without a plan.
She swapped her answer on the fly during the quiz.
4. Trading items with someone in the middle of an activity.
The kids were swapping cards on the fly at recess.