The spelling of the word "lie firm" is pronounced /laɪ fɜrm/. This two-word phrase consists of the verb "lie," meaning to recline or rest in a horizontal position, followed by the adjective "firm," meaning solid, stable or unyielding. The pronunciation of "lie" sounds like "lye" and then "firm" has a short "i" sound like "herm". Together, the phrase means to lie down in a stable and rigid manner. It's essential to spell the individual words correctly to avoid confusion with other similar-sounding phrases.