Built-in Mathematica Symbol

WordData

WordData["word", "property"]
gives the specified property for the English word "word".

WordData["word"]
gives a list of full word specifications representing possible uses and senses of "word".

WordData[wordspec, "property"]
gives a property for a particular word specification.

A particular use or sense of a word can be represented by a word specification of the form {"word", "part", "sense"} where "part" is a part of speech, and "sense" is a sense tag.

Words that occur only in one sense can be specified just by "word". Words that occur only in one sense as a given part of speech can be specified by {"word", "part"}.

In WordData, ordinary words are capitalized as they would be within a sentence (such as "word" or "America").

Some multiword phrases (such as "a priori") can be used, and are treated like single words.

Parts of speech include "Noun", "Verb", "Adjective", "Adverb", as well as "Preposition", "Article", etc.

For properties that depend on the use or sense of a word, WordData[wordspec, "property"] gives a list of rules for each use and sense of a word consistent with wordspec.

	"List"	a single list of results for all word specifications
	"Rules"	a list of word specifications for each word specification
	"ShortRules"	a list of word results for each word specification

"PartsOfSpeech"

possible parts of speech for a word

WordData[All, "part"] gives all words of a given part of speech. WordData[All, "Stopwords"] gives a list of words typically ignored in text comparisons. WordData[All, "PartsOfSpeech"] gives a list of parts of speech.

WordData[patt, "Lookup"] gives a list of all available words matching the string pattern patt.

	"Antonyms"	words with an opposite meaning (e.g. "large" from "small")
	"BroaderTerms"	generalizations of a word (e.g. "shape" from "circle")
	"Definitions"	definitions for a word
	"Examples"	examples of the word in use
	"NarrowerTerms"	specializations of a word (e.g. "circle" from "shape")
	"Synonyms"	words with the same meaning (e.g. "large" from "big")

	"ConceptWeight"	rough estimate of semantic importance
	"GeographicDomain"	geographic region to which the word relates (e.g. "India")
	"UsageField"	field or category in which the word is used (e.g. "Law")
	"UsageType"	type of word usage (e.g. "Slang", "Archaism")

	"Hyphenation"	hyphenation blocks in a word
	"PhoneticForm"	IPA phonetic representation

	"BaseForm"	base uninflected form of a word (e.g. "large" from "larger")
	"InflectedForms"	inflected forms of a word (e.g. "went" from "go")
	"MorphologicalDerivatives"	words that are morphologically derived from a word
	"MorphologicalSource"	word from which a word is morphologically derived
	"PorterStem"	Porter-stemmed form of word

	"DerivedAdjectives"	derived adjectives (e.g. "American" from "America")
	"PartTerms"	terms for parts (e.g. "finger" from "hand")
	"WholeTerms"	terms for wholes (e.g. "hand" from "finger")

	"CausesTerms"	verbs for causes (e.g. "kill" from "die")
	"ConsequencesTerms"	verbs for consequences (e.g. "die" from "kill")
	"EntailedTerms"	verbs for entailed actions (e.g. "step" from "walk")
	"SentenceFrames"	ways that the verb can appear in phrases
	"PhrasalVerbs"	phrasal forms for verbs (e.g. "move on" from "move")