Click any word in a definition or example to find the entry for that word
likely to harm or kill someone, or to damage or destroy something
causing a lot of damage or harm
causing physical harm to something so that it is broken, spoiled, or injured
involving the possibility of danger, harm, or failure
dangerous, especially to people’s health or safety
causing severe damage or loss
mainly literary very dangerous
formal causing harm or damage
an employment concept in which people are paid for each specific, short-term task that they do and don't have conventional contracts of employment
Word of the Day
a young cow, deer, or horse that is between one and two years old
a sensational piece of news which does not map to reality, created to attract attention or damage somebody's reputation
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.
Free thesaurus definition of dangerous or harmful from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.