The word "Chanse" is a colloquialism and may refer to luck, opportunity, or chance. Synonyms for "Chanse" include serendipity, fluke, fortune, fate, destiny, hazard, or occasion. When you speak of a "Chanse" encounter, you could also use synonyms such as a fortuitous event, a chance meeting, an unexpected coincidence, or a serendipitous occurrence. If you use "Chanse" in the context of a great opportunity, you may consider alternatives such as opening, gateway, chance, possibility, or potentiality. Overall, identifying appropriate synonyms to use instead of "Chanse" depends on the specific context, and the intended meaning and tone of the message.