chirk up verb2 •To make more cheerful; to cause to perk up."Well, I think," said Mis' Jane Moran, "that we've hit on the only way we could have hit on to chirk each other up over a hard time." — 1912 •To become more cheerful; to perk up or become animated or enthusiastic."Go ahead," he says, and I see Jim chirk up to listen. — 1894 formschirked up · chirking up · chirks up