Fleetingly

1 clue
Very briefly
Similar answers:
Achingly
Adoringly
Afleet
Airfleet
Airfleets
Amazingly
Appealingly
Bitingly
Boastingly
Caressingly
Coldfleet
Commercialfleet
Condescendingly
Countfleet
Cunningly
Cuttingly
Daringly
Dashingly
Disarmingly
Disconcertingly