(transitive) To recharge, to give electrical power to something.
You should charge up your phone before the camping trip, as there won't be any power supplies.
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(LGBTQ, slang, transitive) To deliberately infect (a person) with HIV as part of bug-chasing.
The subcultural vernacular “I'll charge you up" evokes the act of charging a battery or readying a mechanism for action;
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(idiomatic) To motivate, to instill someone with determination.
The coach had to charge up his players with a powerful speech before the final.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.