Etymology
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dangerous (adj.)

c. 1200, daungerous, "difficult to deal with, arrogant, severe" (the opposite of affable), from Anglo-French dangerous, Old French dangeros (12c., Modern French dangereux), from danger "power, power to harm, mastery, authority, control" (see danger).

In Chaucer, it can mean "hard to please; reluctant to give; overbearing." The modern sense of "involving danger, hazardous, unsafe, risky, liable to inflict injury or harm" is from c. 1400. Other words formerly used in this sense included dangersome (1560s), dangerful (1540s). Related: Dangerously.

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Definitions of dangerous

dangerous (adj.)
involving or causing danger or risk; liable to hurt or harm;
unemployment reached dangerous proportions
a dangerous bridge
a dangerous criminal
Synonyms: unsafe
dangerous (adj.)
causing fear or anxiety by threatening great harm;
a dangerous operation
Synonyms: grave / grievous / serious / severe / life-threatening
From wordnet.princeton.edu

Dictionary entries near dangerous

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