Wiktionary
unaggressive
a. Not aggressive. peaceable. Not violent
WordNet
unaggressive
adj. not aggressive; not given to fighting or assertiveness [syn: nonaggressive] [ant: aggressive]
Usage examples of "unaggressive".
On the other hand, if you compare it to the average - or even an exceptional - Hegemonising Swarm, it's small, localised, non-invasive, unaggressive, unshielded, immobile… and almost chatty, using Galin II to communicate.