A colloquial verb meaning to be stingy or to skimp on money, things, or effort (often with a negative nuance).
飲み会で割り勘をケチるのは感じが悪い。
It's unpleasant to be stingy about splitting the bill at a drinking party.
彼はガソリン代をケチって遠出をやめた。
He skimped on gas money and decided not to go on the trip.
プレゼントをケチるより、気持ちをちゃんと伝えたほうがいい。
Rather than being stingy with a present, it's better to properly convey your feelings.