A friendless person can be described using a range of synonyms that express their lack of companionship and social connections. Such synonyms can include "lonely," "isolated," "unconnected," "unpopular," "forgotten," "desolate," "alienated," "neglected," "unwanted," "unwelcomed," "abandoned," "estranged," and "reclusive." Each of these words can carry different connotations and emotional implications, highlighting the different nuances of the experience of being friendless. Some of these words may convey a sense of sadness or rejection, while others may imply a deliberate choice to distance oneself from others. Ultimately, the choice of synonym will depend on the context and tone of the writing or conversation.