Source: Buddhist Dictionary, Manual of Buddhist Terms and Doctrines, by NYANATILOKA MAHATHERA
paṭigha: - 1. In an ethical sense, it means: 'repugnance', grudge, resentment, anger, and is a synonym of byāpāda, 'ill-will' (s. nīvaraṇa) and dosa, 'hate' (s. mūla). It is one of the proclivities (anusaya, q.v.).
2. '(Sense-) reaction'. Applied to five-sense cognition, p. occurs in the following contexts:
(a) as paṭigha-saññā, 'perception of sense-reaction', said to be absent in the immaterial absorptions (s. jhāna 5). Alternative renderings: resistance-perception, reflex-perception;
(b) as paṭigha-samphassa, '(mental) impression caused by 5fold sensorial reaction' (D. 15); s. phassa;(c) as Sappaṭigha-rūpa, 'reacting corporeality', and appaṭigha, 'not reacting', which is an Abhidhammic classification of corporeality, occurring in Dhs. 659, 1050. Sappaṭigha are called the physical sense-organs as reacting (or responding) to sense stimuli; and also the physical sense-objects as impinging (or making an impact) on the sense-organs. All other corporeality is appaṭigha, non-reacting and non-impinging. These 2 terms have been variously rendered as resistant and not, responding and not, with and without impact.
Source: A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]
Description: paṭigha : [m.] anger; repulsion; collision.
Source: Pali-English Dictionary, TW Rhys Davids, William Stede,