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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
to fall over forwards so that your face hits the ground or another surface
the sail behind the main sail on a ship
the activity of exploring abandoned buildings and other manmade structures
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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.