Words that consist of one syllable and end in “f”, “l”, “z”, or “s” after a single vowel are called what?

The term "Floss/SAMMY Rule" refers to a specific phonetic guideline in English that applies to one-syllable words ending in certain consonants—specifically "f," "l," "z," or "s"—following a single vowel. This rule states that when a short vowel precedes these final consonants, the consonant is typically doubled. For instance, in words like "off," "bell," "buzz," and "pass," you see this principle in action, where the consonants are doubled to maintain the short vowel sound before them.

Understanding this rule is essential for helping students with spelling and phonics, as it clarifies why some one-syllable words look as they do when applying the conventions of English spelling. Other concepts, such as Closed Syllable or Short Vowel Rules, might address different syllable types or vowel sounds but do not specifically focus on the doubling of consonants following a single vowel. Hence, "Floss/SAMMY Rule" is the most precise choice for the question posed.