overargumentativeoverargumentative

Overargumentative comes from Latin argūmentor ‘to adduce arguments or proof of something,…’, and goes back to arguō ‘to clarify, to make plain’.

1. Latinc. 75 BCE–200 CEarguō¹‘to clarify, to make plain’
2. Latinc. 75 BCE–200 CEargūmentum¹‘argument’
3. Latinc. 75 BCE–200 CEargūmentor¹‘to adduce arguments or proof of something, prove, reason’
4. Medieval Latinmodernargūmentātīvus¹
5. Middle Englishc. 1150–1500argumentatif¹
6. English1500–presentargumentative¹
7. Englishtodayoverargumentative¹

1. ¹ Wiktionary, English overargumentative

Earlier history uncertain. See Wiktionary.