Wiktionary
unstreamlined
a. Not streamlined.
Usage examples of "unstreamlined".
In its tiny brain, the shark must have had only one purpose, to find out if this flailing, unstreamlined creature was good to eat.
However, for this mission, there was a way around this unstreamlined shape.
This field pulled the ship through Space Plus, for all that it was ungainly, unstreamlined, and resembled an angular metallic squid.
Together they wrestled the decidedly unstreamlined shape of the Collaborator under some semblance of control.