swoop (suomeksi)

syöksyä (v: to fly downwards suddenly / to move swiftly, as if with a sweeping movement)
rynnätä (v: to move swiftly, as if with a sweeping movement)
hyökätä (v: to move swiftly, as if with a sweeping movement)
syöksy (s: an instance, or the act of suddenly plunging downwards)