https://www.merriam-webster.com/sentences/rivalrous
Examples of 'RIVALROUS' in a Sentence | Merriam-Webster
'Rivalrous' in a sentence: That means turn off the TV, give their phone a rest, and even maintain some space between siblings if things tend to get rivalrous.
in a sentenceexamples ofmerriamwebster
https://www.kcl.ac.uk/students/stealing-spying-sabotage-the-rivalrous-history-of-varsitystealing-spying-sabotage-the-rivalrous-history-of-varsity
Stealing, spying, sabotage: The rivalrous history of Varsity | Student news from King's College...