The Floss Rule is a simple spelling rule that helps with doubling the final consonant in certain one-syllable words. Floss Rule: If a one-syllable word ends in f, l, or s, and has a single short vowel before it, you double the final f, l, or s. ⸻ Examples: • Fluff • Bell • Miss • Sniff • Hill • Pass ⸻ Exceptions: Not all words follow this rule — especially words that are not of Anglo-Saxon origin or are proper nouns. Examples: • Chef • Gas • Bus Want a quick rhyme to remember it? “One-syllable w