going off at score

Verb

go off at score (third-person singular simple present goes off at score, present participle going off at score, simple past went off at score, past participle gone off at score)

1. (idiomatic) To break suddenly into a gallop.
2. (idiomatic) To suddenly say or do something impetuous.
   • Bremmil went off at score after the baby's death and the general discomfort that followed, and Mrs Hauksbee annexed him. She took no pleasure in hiding her captives.1888, Rudyard Kipling, “Three and-an Extra”, in Plain Tales from the Hills, Folio Society, published 2005, page 12