1) Contended 2) Debated 3) Discussed 4) Discussed the toss 5) Disputed 6) Engaged in forensics 7) Fought 8) Had a battle 9) Had a debate 10) Had a spat 11) Had words 12) Joined the debate 13) Made a case 14) Made points and counterpoints 15) Quarreled 16) Quarrelled 17) Reasoned 18) Squabbled 19) Stated a case Found on https://www.crosswordclues.com/clue/argued