The spelling of the word "flors" may seem tricky to non-native English speakers, but it follows a pattern of pluralizing nouns ending in "or". The IPA phonetic transcription for "flors" is /flɔrz/. The "o" in "or" becomes "o" with a circumflex (ô) to indicate a long vowel sound, and the "r" is replaced with "rs" to indicate plurality. This spelling rule applies to other words such as "humor" to "humours" and "color" to "colours".