Here's why:
* Comprehensive Information: Dictionaries provide detailed information about words, including their various parts of speech. They often list multiple definitions and usage examples for each word, making it easier to understand how "really" functions in different contexts.
* Trusted Source: Reputable dictionaries, like Merriam-Webster, Oxford English Dictionary, or Cambridge Dictionary, are reliable resources that have been carefully compiled and reviewed by language experts.
* Accessibility: Dictionaries are readily available online and in print, making it convenient to look up the part of speech for any word.
Example:
If you look up "really" in a dictionary, you will likely find it listed as an adverb. It is used to modify verbs, adjectives, or other adverbs to emphasize or intensify their meaning.
For example:
* "He really likes her." (modifying the verb "likes")
* "It's really hot today." (modifying the adjective "hot")
* "She walked really fast." (modifying the adverb "fast")
While other resources like online grammar tools or thesaurus can be helpful, a dictionary is the most comprehensive and reliable source for determining the part of speech of a word.