Annexible is an adjective that refers to something that can be annexed, incorporated or attached. Synonyms for this word include "attachable", meaning capable of being joined or fixed, "incorporable", which pertains to something that can be integrated or merged, or "adaptable", suggesting flexibility in combining or assimilating. Another possible synonym is "assimilable", conveying the idea of being capable of absorption or integration. "Joinable" is a term that indicates the possibility of combining or uniting, while "mergeable" implies the potential to conjoin or amalgamate. Lastly, "unifiable", denotes an object or entity that can be unified or consolidated with another. These synonyms offer alternative expressions to convey the concept of something being annexible.