The term 'หรือไม่ (rʉ̌ʉ mâi)' is commonly used in Thai language to pose a question or offer both possibilities, analogous to 'or not' in English. It creates a dichotomy providing two alternatives, typically placed at the end of a sentence or phrase. It can also be used to introduce a subordinate clause of doubt or uncertainty, functioning similarly to 'whether or not' in English.