A qualifier is a word or phrase that modifies or limits the meaning of another word, often an adjective or adverb, to provide more specificity or nuance. For example, in the phrase "very tall," "very" serves as a qualifier to enhance the meaning of "tall." Qualifiers can indicate degrees of certainty or intensity, such as "somewhat," "likely," or "absolutely." They are commonly used in writing and speech to clarify the extent or nature of a statement.