 An overview of the superlative in English grammar. Superlatives are the highest degree of comparison. This means superlatives are used when we talk about something that is at the top level, or the bottom level of equality. Let's take a look at how the superlative works in the English language. Superlatives ending in S. For one-syllable adjectives, we simply add S at the end of the word to indicate the superlative. For example, cheap, the cheapest, high, the highest. The Great Dane is the biggest breed of dog. Superlatives ending in E. For two-syllable adjectives that end in Y, we change the Y to Y, and add S to indicate the superlative. For example, happy, the happiest, friendly, the friendliest. The busiest airport in the world is the Atlanta International Airport in Georgia. Superlatives with most. For two-syllable adjectives that don't end in Y, and adjectives with three or more syllables, we add the most or the least to indicate the superlative. For example, careful, the most careful, difficult, the least difficult. She is the most beautiful woman I have ever seen. Thanks so much for watching. We are ITTT, the leading provider for Tefal and TESOL training courses. If you like this video, please subscribe by clicking that button down here and click on any of the videos here on the left for more interesting teaching tips for getting certified to teach English abroad and online.