The word "lesieur" is spelled as /le.'sjɜr/ in IPA phonetic transcription. This word refers to a person with a certain surname. The first letter "l" is pronounced as /l/, followed by "e" as /ɛ/ and then "s" as /s/. The letter "i" is pronounced as /i/ and the "e" at the end is pronounced as /ɜr/. The spelling of "lesieur" follows English phonetic rules and should be pronounced as "luh-seer" with the stress on the second syllable.