There are several synonyms for the word "hateling" that can effectively convey a similar meaning. Firstly, the term "foe" encapsulates the essence of an adversary or opponent, often sharing a deep-seated, mutual animosity. Another alternative could be "rival", indicating a competitive relationship characterized by antagonism. Similarly, "adversary" denotes an opponent engaged in a conflict or opposition. Furthermore, "enemy" perfectly encapsulates a person seen as hostile or antagonistic. Lastly, "nemesis" captures the idea of an archenemy, emphasizing the deep-rooted rivalry or direct conflict. Employing any of these synonyms enables individuals to convey the notion of a "hateling" effectively, depending on the intended context or tone of the discourse.