When describing someone or something as dependent on external help, there are various synonyms that can be used to convey the same idea. For example, reliant, subservient, or subject could be used to describe a situation where something or someone requires outside assistance in order to function effectively. Similarly, terms such as contingent, conditional, or provisional could be used to suggest that the situation or individual in question is only able to operate under certain circumstances or conditions. Ultimately, the choice of synonym will depend on the context in which the phrase is being used, as well as the specific connotations that the speaker or writer wishes to convey.