part of speech

Every word can be categorized as a part of speech based on its function in a sentence. In English there are usually eight parts of speech: nouns, pronouns, verbs, adverbs, adjectives, prepositions, conjunctions, and yikes! Interjections.

Dividing words into the parts of speech is a great way to understand how sentences work. In a nutshell, modifiers gotta modify — adjectives modify nouns and pronouns (brown bear), and adverbs modify verbs (runs quickly). Verbs are the heart of the sentence. No sentence is complete without one. Run! (That’s a complete sentence.) Prepositions show a relationship (under, over), and conjunctions (but, and) connect words and phrases. And dang, interjections (wow!) just want to have fun.

Definitions of part of speech
  1. noun
    one of the traditional categories of words intended to reflect their functions in a grammatical context
    synonyms: form class, word class
    see moresee less
    show 5 types...
    hide 5 types...
    major form class
    any of the major parts of speech of traditional grammar
    the word class that can serve as the subject or object of a verb, the object of a preposition, or in apposition
    the word class that serves as the predicate of a sentence
    the word class that qualifies nouns
    the word class that qualifies verbs or clauses
    type of:
    grammatical category, syntactic category
    (grammar) a category of words having the same grammatical properties
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week


  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week