When it comes to expressing dismissal or neglect for something, the phrase "blew it off" is a common phrase. However, there are several synonyms that can be used to convey the same meaning. For example, one could say "brushed it off," suggesting the act of casually disregarding something. Another option is "ignored it," indicating a lack of attention or care. "Dismissed it" is another choice, which denotes a deliberate choice to overlook something without giving it much thought or consideration. "Decided against it" implies taking a more active role in consciously choosing not to pursue something. Finally, "shrugged it off" suggests a casual and indifferent attitude towards something.