round on

British

verb

(intr, preposition) to attack or reply to (someone) with sudden irritation or anger

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

round on Idioms

Turn on, assail, especially verbally. For example, They all rounded on Jake for not upholding the party line. [Mid-1800s]

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

According to several sources contacted by AFP, Mbappe, hampered by damage to the outer ligament of his left knee since late 2025, had to withdraw from Madrid's squad to face Benfica in the Champions League play-off round on Wednesday because he felt "pain that was too persistent" in training.

From Barron's

Britain's Cameron Norrie is due to play Spaniard Rafael Jodar in the first round on Monday.

From BBC

Fast forward to 2026 and Matheson is part of a Macclesfield squad riding the crest of a wave in the FA Cup and preparing to face Brentford in the fourth round on Monday.

From BBC

Newcastle visit Aston Villa in the FA Cup fourth round on Saturday before a long journey to Azerbaijan to face Qarabag in the Champions League play-off round first leg next midweek.

From Barron's

She had finished the downhill round on Tuesday morning in first place and handed Shiffrin a 0.06-second advantage to take into the slalom leg.

From The Wall Street Journal

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023