V4I1F4F4I1N1G2
17 points
VIFFING is validvalid
VIFF, to change direction abruptly of a vertical take-off aircraft [v]
VIFF, to change direction abruptly of a VTOL aircraft [v]
VIFF, to change direction abruptly of a vertical take-off aircraft [v]
VIFF, to change direction abruptly of a VTOL aircraft [v]