round on

round on (third-person singular simple present rounds on, present participle rounding on, simple past and past participle rounded on)

1. (transitive, sometimes figurative) To turn and attack someone or something.

   As a group of policemen went past him, one of them rounded on him, grabbing him by the arm.

   • 2020 March 29, Nazia Parveen, “Stephen Kinnock targeted by police for visiting father, Neil”, in The Guardian‎:

     But officers from South Wales police, 150 miles away, rounded on him for the decision to go to see his family

   • 2021 October 20, Paul Stephens, “Network News: Electricity prices force Freightliner to revert to diesel”, in RAIL, number 942, page 7:

     Rail unions also rounded on ministers to intervene in the energy "omnishambles", with ASLEF General Secretary Mick Whelan calling on the Government to "do the right thing for people, the right thing for business, and the right thing for our rail network. Because it is also the right thing for our planet."

• round upon

• round to (the nearest)
• round down
• round off
• round out
• round up