90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.
as a question adverb (introducing a direct or indirect question): Why didn’t you call me? ♦ I know why he’s worried. (followed by an infinitive without “to”): ♦ We can start now, so why wait?
as a relative adverb (referring back to a noun and introducing a relative clause): She’s tired and that’s the reason why she’s so bad-tempered. (introducing a clause that is the subject, object, or complement of another clause): ♦ Everyone in Dublin is so friendly, and that is why I love the city.