Click any word in a definition or example to find the entry for that word
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 entries. Click on the T button in an entry to review the synonyms and related words for that meaning.
They were charged with conspiring to commit acts of terrorism.
This is the British English definition of terrorism. View American English definition of terrorism.
Change your default dictionary and thesaurus to American English.
View the pronunciation for terrorism.
the activity of being impolite in a social situation by looking at your phone instead of paying attention to the person you are with
feeling or showing happiness
a peer-to-peer digital currency that is validated by cryptography
A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.
Definition of terrorism from the online English dictionary from Macmillan Publishers Limited.