to connect with, fig. to start, begin (vādaṃ a discussion or argument) SN.i.221 (bālena paṭisaṃyuje = paṭipphareyya C.; “engage himself to bandy with a fool” K.S. 284); Snp.843 (vādaṃ p. paṭipphareyya kalahaṃ kareyya Mnd.196)
pp paṭisaṃyutta (q.v.).

paṭi + saṃ + yuj