Solitary I believe.
Solitary
bacteria is colonial
cnidarianas are all not colonial, some are solitary. They are colonial because of advantages that they can get in being colony. like sharing of food, shelter etc
Scorpions are generally solitary animals but one may find several sharing a particular shelter. However, they are not colonial as they are living 'alone together.'
Not all corals are colonial; some live as solitary polyps. While the majority of coral species form colonies composed of many genetically identical polyps that work together, certain species, like the mushroom coral (Fungiidae), exist as individual, solitary polyps. These solitary corals can thrive independently and do not rely on a colony structure for survival.
Squids are generally not considered colonial organisms; they are primarily solitary creatures. While some species may exhibit social behaviors or form temporary groups, they do not live in permanent colonies like certain other marine animals, such as corals or some jellyfish. Most squids have individual territories and exhibit solitary hunting and mating behaviors.
You keep it the same. There are solitary people. There is a solitary person.
Solitary
They are solitary.
Solitary
solitary
monkeys are solitary animals