The phrase "seized occasion" refers to taking advantage of an opportunity. There are many synonyms for this phrase, such as "grasped moment," "seized opportunity," "seized chance," "seized the day," "made the most of," or "took advantage of." Each of these phrases conveys the same meaning, emphasizing the importance of making the most of an opportunity. It's essential to seize an occasion, as missing out on opportunities can lead to regret and missed potential. By using these synonyms, speakers and writers can vary their language and convey the same message more creatively and effectively.