"Sucker-punches" is a term commonly used in the context of sudden and unexpected punch or blow, usually delivered when the victim is unprepared. However, this term can be replaced with other synonyms that equally convey the message of an underhanded or unfair attack. For instance, words like "ambush," "cheap-shot," "blindside," "backstab," "sneak-attack," "cowardly strike," and "treacherous hit" can also be used. These synonyms are suitable for conveying the negativity and surprise that accompany sucker-punches. The choice of synonym to employ depends on the context and the level of formality required. Thus, writers and speakers are encouraged to vary their use of language to add diversity to their expressions.