The correct spelling of the word is "Christmas," with the stress on the first syllable. The IPA phonetic transcription for this word is /ˈkrɪsməs/. The 'ch' sound in "Christmas" is pronounced as /k/ and the 't' as /t/. The 'i' is pronounced as /ɪ/ and the 'a' as /ə/. It is important to spell words correctly to ensure effective communication and avoid misunderstandings. Therefore, the correct spelling of "Christmas" should be used instead of "Christmar."