Under what condition does the FLOSS Rule apply?

The FLOSS Rule specifically applies to one-syllable base words that have a short vowel sound. This rule guides the spelling of these words by indicating that when such words end in the consonants 'f', 'l', or 's', the final consonant is typically doubled to maintain the short vowel sound. For example, in the word 'buff', the doubling of the 'f' is necessary to keep the vowel 'u' short in pronunciation.

Understanding this rule is crucial when spelling and helps ensure that short vowel sounds are conveyed correctly in written form. In contrast, base words with a long vowel sound or multi-syllable words do not follow this specific spelling convention as dictated by the FLOSS Rule.