The phrase "club together" implies a collective effort towards a common goal or objective. Antonyms to this phrase may include words like "disperse," "separate," or "disconnect," all of which suggest a lack of cooperation or collaboration. Another antonym could be "hoard," suggesting an unwillingness to share or contribute resources towards a group effort. "Compartmentalize" could also be considered an antonym, implying a division or separation of responsibilities or resources within a group, rather than a unified effort. Overall, the opposite of "club together" is any word or phrase that suggests a lack of union or a unwillingness to work towards a shared objective.