A suffix is found where in a word?

A suffix is specifically a word part that is added to the end of a root word to modify its meaning. This addition can change the word's grammatical function, such as converting a noun into a verb or an adjective into a noun. For instance, in the word "happiness," the root "happy" is combined with the suffix "-ness," which indicates a state or condition. Suffixes can denote various functions including tense in verbs, plurality in nouns, and different qualities in adjectives, underscoring their role as essential components in word formation. Thus, placing a suffix at the end of a word is its defining characteristic.