/ fɔːˈwɔːn; NAmE fɔːrˈwɔːrn/ verb
[ often passive ] forewarn sb (of sth) ( formal ) to warn sb about sth bad or unpleasant before it happens :
[ vn ]
The commander had been forewarned of the attack.
[also vn that ]
► fore·warn·ing noun [ U , C ]
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IDIOMS
- forewarned is forearmed