Which of the following synonyms casts the most negative view?

The term "overbearing" casts the most negative view among the given synonyms because it implies a domineering, oppressive, or excessively controlling attitude. When someone is described as overbearing, it suggests that they impose their will on others in a way that feels intrusive or aggressive, undermining others' autonomy and freedom.

In contrast, "assertive" and "confident" generally carry positive connotations, indicating a sense of self-assurance and the ability to express one's views without disregarding others. "Forceful," while also potentially having a strong or intense implication, does not inherently suggest the same level of negativity as "overbearing." It can indicate a vigorous expression of opinion or strength without the oppressive undertones associated with being overbearing. Thus, "overbearing" stands out as the synonym that encapsulates a more negative view, highlighting an undesirable trait in interpersonal relationships.