A suffix is a group of letters or a single letter added to the end of a word to modify it, change its meaning, or alter how it's used in a sentence

. For example, the suffix "-ly" can be added to the adjective "quick" to form the adverb "quickly." Suffixes play a significant role in English, not only in grammar but also in writing and reading comprehension

. They are used to change the parts of speech, show the plural or possessive forms of nouns, conjugate verb tenses, and demonstrate the comparative and superlative forms of adjectives