/ kənˈdəʊn; NAmE -ˈdoʊn/ verb
to accept behaviour that is morally wrong or to treat it as if it were not serious :
[ vn ]
Terrorism can never be condoned.
[also v -ing , vn -ing ]
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WORD ORIGIN
mid 19th cent.: from Latin condonare refrain from punishing, from con- altogether + donare give.