English: Dictionaries

• Merriam-Webster Online (dictionary and thesaurus)
• Oxford English Dictionary
• The American Heritage Dictionary of the English Language (Fourth Edition)
• Cambridge Dictionary of American English
• Cambridge Dictionary of Idioms
• Cambridge Dictionary of Phrasal Verbs
• WordNet 1.5 Search
• Wiktionary
  

English: Prefixes, Roots, Suffixes

• Scientific Prefixes and Suffixes
  

English: Grammar

• Plain English Handbook - by J. Martyn Walsh and Anna Kathleen Walsh (9th Edition, 1986)
  

English: Composition

English: Punctuation and Structure

English: Parts of Speech

• Paragraph:
  
• Sentence:
  
• Phrase:
  
• Word:

• Noun:

• Pronoun:

• Pronoun (from Interlink Language Centers)
  

• Proper noun:

• 
  

• Common noun:

• Verb:

• Verbs
  

• Adverb:

• Adverbs
  

• Adjective: A name for a word that describes a noun. Nouns are words that mean a place, a person, or a thing. An adjective is a word that gives more information about the noun that it goes with. In English, the adjective comes before the noun it describes.

• Adjectives
  

• Preposition:

• Preposition
  

• Conjunction:

• Conjunction
  

• Article:

• Article

• Identification of the parts
• Sentence Diagramming
• Walsh's Plain English Handbook
  

English: Word Categories (Classes, Attributes)

• Antonym: a word that has the opposite meaning as another word.
• Homonym: a word that has more than one meaning. There are two kinds of homonyms: homophones and homographs.

• Homophone: a word that sounds the same as another word but has a different meaning. It may have a different spelling.
• Homograph:
  

• Polysemy:
• Meronym:
• Holonym:
• Hypernym:
• Hyponym:
• Synonym: a word that has the same (or almost the same) meaning as another word.
• Root:
• Meaning:
• Origin:
  
• Anagram: