paṭivirujjhati : [paṭi + vi + rudh + ya] is hostile; contradicts.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Paṭivirujjhati [paṭi+vi+rudh] to act hostile, to fall out with somebody, to quarrel (saddhiŋ) J iv.104. -- pp. paṭiviruddha (q. v.).

Pali-English Dictionary, TW Rhys Davids, William Stede,